/ Dictionary / Index S semicircular canal: Meaning and Definition of Find definitions for: semicir'cular canal' Pronunciation: [key] — Anat. Anat. any of the three curved tubular canals in the labyrinth of the ear, associated with the sense of equilibrium. See diag. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. semicircle semicivilized Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language