/ Dictionary / Index I internal jugular vein: Meaning and Definition of Find definitions for: inter'nal jug'ular vein". Pronunciation: [key] See under(def. 1b). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. internalize internal medicine Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language