/ Dictionary / Index G glucinum: Meaning and Definition of Find definitions for: glu•ci•num Pronunciation: (gl-sī'num), [key] — n. Chem. (formerly) beryllium. Symbol: Gl Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. glucide Gluck Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language