/ Dictionary / Index P pyoid: Meaning and Definition of Find definitions for: py•oid Pronunciation: (pī'oid), [key] — adj. Pathol. pertaining to pus; puslike. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyogenic pyonephritis Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language