/ Dictionary / Index N Newtonian fluid: Meaning and Definition of Find definitions for: Newto'nian flu'id Pronunciation: [key] — Hydrodynam. any fluid exhibiting a linear relation between the applied shear stress and the rate of deformation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Newtonian Newtonian mechanics Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language