/ Dictionary / Index P pneudraulic: Meaning and Definition of Find definitions for: pneu•drau•lic Pronunciation: (n-drô'lik, -drol'ik, ny-), [key] — adj. of or pertaining to a mechanism involving both pneumatic and hydraulic action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. -pnea pneum. Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language