/ Dictionary / Index S spirochetosis: Meaning and Definition of Find definitions for: spi•ro•che•to•sis Pronunciation: (spī"ru-kē-tō'sis), [key] — n. Pathol. a disease caused by infection with a spirochete. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spirochete spirograph Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language