/ Dictionary / Index R relapsing fever: Meaning and Definition of Find definitions for: relaps'ing fe'ver Pronunciation: [key] — Pathol. Pathol. one of a group of fevers characterized by relapses, occurring in many tropical countries, and caused by several species of spirochetes transmitted by several species of lice and ticks. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. relapse relate Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language