/ Dictionary / Index H hypoglossal nerve: Meaning and Definition of Find definitions for: hy'poglos'sal nerve' Pronunciation: [key] — Anat. Anat. either one of the twelfth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the tongue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypoglossal hypoglottis 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