RACHIS • FREE TRANSLATOR.ORG • Definition of Rachis

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Rachis

noun

(pl. E. rachises, L. rachides) (Written also rhachis)

Axis of a compound leaf or compound inflorescence.

The series of vertebrae forming the axis of the skeleton and protecting the spinal cord. Synonyms: back, backbone, spinal column, spine, vertebral column.

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Etymology of 'Rachis'

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"Rachis" Quotes from Famous Books

... could see would be worth seeing. I know not that I found many rare or new things that day. I recollect, amid the endless variety of objects, Film-ferns of various delicate species, some growing in the moss tree-trunks, some clasping the trunk itself by horizontal lateral fronds, while the main rachis climbed straight up many feet, thus embracing the stem in a network of semi-transparent green Guipure lace. I recollect, too, a coarse low fern {245} on stream-gravel which was remarkable, because its stem was set with thick green prickles. I ...

— At Last • Charles Kingsley

... backbone, spinal column, rachis, chine. Associated Words: Vertebrata, Invertebrata, vertebra, vertebrate, cyrtosis, chiropractic, chiropractor, spondyle, coccyx, ...

— Putnam's Word Book • Louis A. Flemming

... so much in structure from phanerogamic plants, it may be worth while here to show that twining ferns do not differ in their habits from other twining plants. In Lygodium articulatum the two internodes of the stem (properly the rachis) which are first formed above the root-stock do not move; the third from the ground revolves, but at first very slowly. This species is a slow revolver: but L. scandens made five revolutions, each at the average rate of 5 hrs. 45 m.; and ...

— The Movements and Habits of Climbing Plants • Charles Darwin