/ Dictionary / Index P perfusion: Meaning and Definition of Find definitions for: per•fu•sion Pronunciation: (pur-fy'zhun), [key] — n. the act of perfusing. the passage of fluid through the lymphatic system or blood vessels to an organ or a tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: perfusion (Thesaurus) perfuse Pergamum Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language