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Rotatory   Listen
adjective
Rotatory  adj.  
1.
Turning as on an axis; rotary.
2.
Going in a circle; following in rotation or succession; as, rotatory assembles.
3.
(Opt.) Producing rotation of the plane of polarization; as, the rotatory power of bodies on light. See the Note under polarization.






Collaborative International Dictionary of English 0.48








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"Rotatory" Quotes from Famous Books



... Abyssinia, as well as on the Zanzibar coast, according to Stecker (quoted by Ploss-Bartels, Das Weib, Section 119) young girls are educated in buttock movements which increase their charm in coitus. These movements, of a rotatory character, are called Duk-Duk. To be ignorant of Duk-Duk is a great disgrace to a girl. Among the Swahili women of Zanzibar, indeed, a complete artistic system of hip-movements is cultivated, to be displayed in coitus. It prevails more especially on the coast, and a Swahili ...
— Studies in the Psychology of Sex, Volume 6 (of 6) • Havelock Ellis

... and in the absence of these they are compelled to resort to wallowing. They fling themselves upon their sides, and using their hunch and shoulder as a pivot, spin round and round for hours at a time. In this rotatory motion they aid themselves by using the legs freely. The earth becomes hollowed out and worn into a circular basin, often of considerable depth, and this is known as a "buffalo wallow." Such curious circular concavities are seen throughout ...
— The Hunters' Feast - Conversations Around the Camp Fire • Mayne Reid

... swirling into rounded pillar-like shapes, that could easily have been mistaken for solid columns, standing for a time in one place, then stalking over the summits of the hills, or suddenly breaking into confused and cumbering masses; while the heavier particles, no longer kept in suspension by the rotatory whirl, might be seen spilling back towards the earth, like a sand-shower projected ...
— The Boy Slaves • Mayne Reid

... of the piece; this patent goes back to 1829-1830. Colonel Colt first endeavoured to make a number of barrels revolve by raising the hammer, but the weight of the barrels suggested a return to the old rotatory cylinder, for which he took out a patent in 1835; and in 1836 he took out another patent for obtaining the rotatory motion by drawing back the trigger, and he subsequently introduced the addition of a lever ramrod fixed on to the barrel. Col. Colt came to the conclusion that the hammer-revolving ...
— Lands of the Slave and the Free - Cuba, The United States, and Canada • Henry A. Murray

... Satan,—he who his unglad Task ever plies midst rotatory burnings For wrath divine has made him like a wheel In that red realm from whence ...
— The Complete Works of Whittier - The Standard Library Edition with a linked Index • John Greenleaf Whittier

... whirling motions of some of these objects were noticed by him. The remarkable form of one sketched at Wateringbury, in Kent, January 17, 1852, gave him the means of detecting and measuring a rotatory movement of the whole spot round the black nucleus at the rate of 100 degrees in six days. "It appeared," he said, "as if some prodigious ascending force of a whirlwind character, in bursting through the cloudy stratum and the two higher and luminous strata, had given to the whole ...
— A Popular History of Astronomy During the Nineteenth Century - Fourth Edition • Agnes M. (Agnes Mary) Clerke

... large calabash, threw a little water on it with a small calabash; which two calabashes are all that are necessary for washing gold. The quantity of water was only sufficient to cover the sand about one inch. She then crumbled the sand to pieces, and mixt it with the water; this she did not in a rotatory manner, but by pulling her hands towards herself, as shewn in ...
— The Journal Of A Mission To The Interior Of Africa, In The Year 1805 • Mungo Park

... in a brown coloured clay) is put into a large calabash, and mixed with a sufficient quantity of water. The woman, whose office it is, then shakes the calabash in such a manner, as to mix the sand and water together, and give the whole a rotatory motion; at first gently, but afterwards more quick, until a small portion of sand and water, at every revolution, flies over the brim of the calabash. The sand thus separated is only the coarsest particles mixed with a little muddy water. After the operation has been continued ...
— Life and Travels of Mungo Park in Central Africa • Mungo Park

... steam-engine and in other machines of similar type, the problem is simplified by the uniform length of the stroke made by the piston, so that devices such as the crank and eccentric circular discs are readily applicable to the securing of a rotatory motion for a fly-wheel from a reciprocating motion in the cylinders. In the application of wave-power provision must be made for the utilisation of the force derived from movements of differing lengths, as well as of differing characters, in the force of impact. Every movement ...
— Twentieth Century Inventions - A Forecast • George Sutherland

... motions generated by the joint influence of the sun and moon; and by the rotatory and orbital course of the earth,—as developed in trade-winds, equinoctial ...
— The Sailor's Word-Book • William Henry Smyth

... great degree. As he intended the earth for the habitation of animals and vegetables, is it reasonable to suppose, he made two jobs of his creation, that he first made a chaotic lump and set it into rotatory motion, and then waited the millions of ages necessary to form itself? That when it had done this, he stepped in a second time, to create the animals and plants which were to inhabit it? As the hand of ...
— The Writings of Thomas Jefferson - Library Edition - Vol. 6 (of 20) • Thomas Jefferson

... the town— To plough, loom, anvil, spade—and oh! most sad To that dry drudgery at the desk's dead wood? Who but the Being unblest, alien from good, Sabbathless Satan! he who his unglad Task ever plies 'mid rotatory burnings, That round and round incalculably reel— For wrath divine hath made him like a wheel— In that red realm from which are no returnings; Where toiling, and turmoiling, ever and aye He, and his thoughts, keep ...
— The Works of Charles and Mary Lamb IV - Poems and Plays • Charles and Mary Lamb

... this subject, that shooting-stars are not a rush of aerial fire which is put out as soon as it is kindled, nor yet a blaze caused by a quantity of air being suddenly allowed to rush upwards, but that they are heavenly bodies, which from some failure in their rotatory power, fall from their orbit and descend, not often into inhabited portions of the earth, but for the most part into the sea, whereby they escape notice. This theory of Anaxagoras is confirmed by Daimachus ...
— Plutarch's Lives, Volume II • Aubrey Stewart & George Long

... it positively over-hung the full lips; and these lips, quivering and forming a round O, were giving vent to a shrill little whistle, while the long fingers of the bony hands, placed facing one another on the upper part of the chest, were rapidly moving with a rotatory action. From time to time the motion of the hands subsided, the lips ceased whistling and quivering, the head was bent forward as though listening. I came still nearer, examined him still more closely.... The stranger held ...
— A Desperate Character and Other Stories • Ivan Turgenev

... solitary, bodiless head bounced on the path between us. The leopardess came rushing under the elephants from behind, and would have seized it, but, with frightful contortions of visage and a loathsome howl, it gave itself a rapid rotatory twist, sprang from her, and buried itself in the ground. The death in my arms assoiling me from fear, I regarded them all unmoved, although never, sure, was elsewhere beheld ...
— Lilith • George MacDonald

... denomination is derived from a piece of wood, about six inches long and two thick, diminished from the middle to form a double cone. When the cat is placed on the ground, the player strikes it smartly—it matters not at which end—and it will rise with a rotatory motion high enough for him to strike it; if he misses, another player takes his place; if he hits, he calls for a number to be scored to his game; if that number is more than as many lengths of his cudgel, he is out; if not, they are scored, and he ...
— The Works of John Bunyan • John Bunyan

... busy all the afternoon, and the clock still indicated fifteen minutes short of the time at which he had intended to leave. He leaned back in his chair, and, yielding to the slight rotatory movement of that active piece of furniture, indulged in the first twirl for three days. Bassett or no Bassett, it was exhilarating, and, having gone to the limit in one direction, he obtained impetus by a clutch ...
— Salthaven • W. W. Jacobs

... examine the other guests with an eye to the delights of oratory. There were near a dozen present, all men, and (as Joseph exulted to perceive) all working men. Often already had he seen cause to bless that appetite for disconnected fact and rotatory argument which is so marked a character of the mechanic. But even an audience of working men has to be courted, and there was no man more deeply versed in the necessary arts than Joseph Finsbury. He placed his glasses ...
— The Wrong Box • Robert Louis Stevenson and Lloyd Osbourne

... place so exclusively Mexican as Monterey, you saw not only Mexican saddles but true Vaquero riding—men always at the hand-gallop up hill and down dale, and round the sharpest corner, urging their horses with cries and gesticulations and cruel rotatory spurs, checking them dead with a touch, or wheeling them right-about-face in a square yard. The type of face and character of bearing are surprisingly un-American. The first ranged from something like the pure Spanish, to something, in its sad ...
— The Works of Robert Louis Stevenson - Swanston Edition - Vol. 2 (of 25) • Robert Louis Stevenson

... time. The blood taken was always covered with a strong cupped size, and on his death three or four pints of matter were found in one side of the chest; which had probably, but lately, been effused from a vomica. This child was frequently induced to swing, both in a reciprocating and in a rotatory swing, without any apparent absorption of matter; in both these swings he expressed pleasure, and did not appear to ...
— Zoonomia, Vol. II - Or, the Laws of Organic Life • Erasmus Darwin

... public than perhaps they can fairly be said to have approved themselves hitherto, by using their variety of power rather to support intellectual conclusions by concentric props, than to shake them with rotatory storms of wit; and modestly endeavouring to initiate the building of walls for the Bridal city of Science, in which no man will care to identify the particular stones he lays, rather than complying farther with the existing picturesque, but wasteful, practice of every knight to throw up a feudal ...
— A Joy For Ever - (And Its Price in the Market) • John Ruskin

... at which the greater part of the vaporous matter of which they consisted would become liquid or solid. The known law of gravitation would then cause them to agglomerate in masses, which would assume the shape our planets actually exhibit; would acquire, each round its own axis, a rotatory movement; and would in that state revolve, as the planets actually do, about the sun, in the same direction with the sun's rotation, but with less velocity, and each of them in the same periodic time which the sun's ...
— Blackwood's Edinburgh Magazine, No. CCCXXXVI. October, 1843. Vol. LIV. • Various

... stars and revolutions, and its motions are annual, rotatory and diurnal, in all its extensive diversity of waiters, cooks, saucepans, fryingpans, gridirons, salamanders, stoves and smoke-jacks; so that if you wish to know true and uncloying delight, you are now acquainted ...
— Real Life In London, Volumes I. and II. • Pierce Egan

... mango-trees, among which the Portuguese lived while superintending the washing for the precious metal. The process of washing is very laborious and tedious. A quantity of sand is put into a wooden bowl with water; a half rotatory motion is given to the dish, which causes the coarser particles of sand to collect on one side of the bottom. These are carefully removed with the hand, and the process of rotation renewed until the whole of the ...
— Missionary Travels and Researches in South Africa - Journeys and Researches in South Africa • David Livingstone

... orifices at different times: that is, two or three open theirs at the moment that some of the others are closing, so that no regular or simultaneous movement takes place between the different animals. This irregular movement of the animals gives to the whole body an irregular rotatory motion; but when one is separated from the others it can only drive itself round and round upon its own centre, and has not the faculty of propelling itself as the other acalepha have. They also swim with either end foremost, in the manner the other ...
— Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 2 (of 2) • George Grey

... take outside and kill. Lorne watched him make it, envying him his assurance; and Miss Milburn was aware that he watched and aware that he envied. The room filled with gaiety and movement: Mr Milburn, sidling dramatically along the wall to escape the rotatory couples, admonished Mr Murchison to get a partner. He withdrew himself from the observation of Miss Dora and Mr Winter, and approached a young lady on a sofa, who said "With very great pleasure." When the dance was over he ...
— The Imperialist • (a.k.a. Mrs. Everard Cotes) Sara Jeannette Duncan

... any considerable mass of air to be suddenly transferred from beyond the tropics to the equator, the difference of the rotatory velocity proper to the two situations would be so great as to produce not merely a wind, but a —— ...
— English Synonyms and Antonyms - With Notes on the Correct Use of Prepositions • James Champlin Fernald

... but that it existed in various states of condensation, and that it had "certain nuclei established in it which might become centres of aggregation for the neighboring diffused matter,"—the author attempts to show that on such centres a rotatory motion would be established wherever, as was the most likely case, there was any obliquity in the lines of direction in which the opposing currents met each other; that this motion would increase as the agglomeration proceeded; that at certain intervals the centrifugal force, acting on the ...
— Modern Atheism under its forms of Pantheism, Materialism, Secularism, Development, and Natural Laws • James Buchanan

... these two currents come into violent collision again on the lee-side, where, the air being more or less still, a considerable portion of the wind is forcibly driven back towards the barchan, corroding its side in a double rotatory way, each such circle having for a diameter the radius of the barchan crescent containing them. In fact in many barchans the sand ripples on the windward slopes cross the direction of the wind at right angles. A line of sand formed in the centre of the barchan crescent in the opposite direction ...
— Across Coveted Lands - or a Journey from Flushing (Holland) to Calcutta Overland • Arnold Henry Savage Landor

... of the earth. Attracted by the novelty of the sight, the bold and daring warriors, although still retaining their firm grasp of the unhappy soldiers, were for a moment diverted from their bloody purpose, and temporarily suspended the quick and rotatory motion of their weapons. Captain Erskine took advantage of this pause to seize the halbert of one of his sergeants, to the extreme point of which he hastily attached a white pocket handkerchief, that was loosely ...
— Wacousta: A Tale of the Pontiac Conspiracy (Complete) • John Richardson

... guarded, especially with regard to the preservation of pronation and supination. These movements are interfered with if union takes place in a bad position with angular or rotatory deformity of one or both bones, or if callus is formed in excess and causes locking of the bones. In some cases the callus fuses the two bones across the interosseous space, and pronation ...
— Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. • Alexander Miles

... no variation in this step; but you can vary the movement by going backwards or forwards at pleasure, instead of continuing the rotatory motion. The Valse a Deux Temps, like the Polka, admits of a reverse step; but it is difficult, and looks awkward unless executed to perfection. The first requisite in this Valse is to avoid all jumping movements. The feet must glide smoothly and swiftly over the floor, ...
— Routledge's Manual of Etiquette • George Routledge

... the effect of the friction of the earth's surface on the eastward circulation of the air by a very simple experiment with a pail of water. If we put into the pail grains of any material a little heavier than water, and then give the water a rotatory motion by stirring it, the grains ought, by the centrifugal force imparted to them, to collect around the sides of the pail; but, sinking to the bottom, they do in fact tend to collect at the centre, carried inward by those currents which ...
— The Atlantic Monthly, Vol. I., No. 3, January 1858 - A Magazine of Literature, Art, and Politics • Various

... the divining-rod is nothing but a symbol of the lightning, that exception will furnish such evidence. For this exceptional kind of divining-rod was made of a pointed stick rotating in a block of wood, and it was the presence of hidden water or treasure which was supposed to excite the rotatory motion. ...
— Myths and Myth-Makers - Old Tales and Superstitions Interpreted by Comparative Mythology • John Fiske

... 16,954. A high molecular weight characterizes these substances, but so far no definite value has been determined by either physical or chemical means; A. P. Sabanezhev obtained the value 15,000 by Raoult's method for purified egg albumin. All albumins are laevo-rotatory; and on incineration a small amount of inorganic ash is invariably left. They are usually insoluble in water, alcohol and ether; and their presence as solutes in vegetable and animal fluids is not yet perfectly understood, but it is probably to be connected with the presence of salts or other substances. ...
— Project Gutenberg Encyclopedia

... has become of the body of the atlas. It has been joined to the central block of the second vertebra—the axis—and projects upwards within the front part of the ring of the atlas, and thus forms a pivot round which rotatory movements of the head can take place. Here we have in the atlas an approach to the formation of a wheel—a wheel which has its axle or pivot placed at some distance from its centre, and therefore a complete revolution of the atlas is impossible. A battery of ...
— A Book of Exposition • Homer Heath Nugent

... the interior galleries of the great hall. The stipulated tax of forty dollars on each of these vehicles will necessitate a tolerably active undulation of polls if the company is to make both ends meet—granting that a rotatory movement can ...
— Lippincott's Magazine of Popular Literature and Science, Vol. XVII. No. 101. May, 1876. • Various

... this, that it will fly up as easily as a ball when it is laid in the trap, for the striker has only to tap one end of it, and up it flies, making many a summerset as it rises; while it is performing this turn-over motion, which philosophers call the rotatory, the striker makes a blow at it and sends it whither ...
— The Book of Sports: - Containing Out-door Sports, Amusements and Recreations, - Including Gymnastics, Gardening & Carpentering • William Martin

... attendant worries—is something that Wellesley has to take measures to guard against, and the faculty has worked out a scheme of biennial rotatory festivities which since 1911-1912 has eased the pressure of revelry in May and June, as well as throughout the ...
— The Story of Wellesley • Florence Converse

... their visit, they will at least be not a little amused by the apt performance of a docile ass, whose task it is to draw up water from a well 300 feet deep! This office he performs by treading rapidly inside of an immense windlass-wheel (15-1/2 feet in diameter,) whereby he gives it the necessary rotatory motion. The natural longevity of these patient laborers is here exemplified by the instances on record; one done the duty for above 50 years, another 40, and another nearly 30. To afford some idea of the depth of the well, ...
— Brannon's Picture of The Isle of Wight • George Brannon

... somersault. The ordinary vibrations seldom exceed two feet in height. The wave-movement has a rate of from twenty to thirty miles a minute, depending on the elasticity of the rock and the elevations on the surface. When two undulations cross each other, a rotatory or twisting motion is produced. The waves are generally transmitted along the lines of primary mountain chains, which are doubtless seated on a fracture. The Lisbon waves moved from southwest to northeast, or parallel to the mountain system of the Old World; those of the United ...
— The Andes and the Amazon - Across the Continent of South America • James Orton

... is 'effervescence' who doubts? Effervescence enough; Decrees passed by acclamation to-day, repealed by vociferation to-morrow; temper fitful, most rotatory changeful, always headlong! The 'voice of the orator is covered with rumours;' a hundred 'honourable Members rush with menaces towards the Left side of the Hall;' President has 'broken three bells in succession,'—claps on his hat, as signal that the country is near ruined. A fiercely ...
— The French Revolution • Thomas Carlyle

... with a grosser faith, as our senses give it to us. We behold space sown with rotatory islands; suns and worlds and the shards and wrecks of systems: some, like the sun, still blazing; some rotting, like the earth; others, like the moon, stable in desolation. All of these we take to be made of something we call matter: a thing which no analysis can help us ...
— Essays of Robert Louis Stevenson • Robert Louis Stevenson

... he chose puzzled and almost shocked the rotatory guardians of his sanctum. Once he picked an enormous volume on Greek mythology, full of pictures and translated passages from ...
— The Soul of a Child • Edwin Bjorkman



Words linked to "Rotatory" :   revolutionary, rotatory joint



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