TRACTIONAL • FREE TRANSLATOR.ORG • Definition of Tractional

... a third and still larger tube in the same way, and still larger surprise will meet a still larger volume and force of blast, like a stiff breeze set in motion by the puny effort of a single expiration. Of course, the prime impulse must bear a certain proportion to the result; and the inductive or tractional friction of the initial blast, of flame or breath, will be used up at length unless re-enforced. In ventilating practice, there is such re-enforcement, from an excess of gravity in the cooler atmosphere outside ...

— Scientific American Supplement, Vol. XV., No. 388, June 9, 1883 • Various

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