/ Dictionary / Index C collegium: Meaning and Definition of Find definitions for: col•le•gi•um Pronunciation: (ku-lē'jē-um), [key] — pl. -gi•a -gi•ums. college (def. 11). a group of ruling officials each with equal rank and power, esp. one that formerly administered a Soviet commissariat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. collegiate institute collegium musicum Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language