/ Dictionary / Index E extrinsic eye muscle: Meaning and Definition of Find definitions for: extrin'sic eye' mus"cle Pronunciation: [key] — Anat. Anat. any of six small muscles that control the horizontal, vertical, and rotating movements of the eyeball. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. extrinsic extrinsic factor Related Content Daily Word Quiz: acme Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language