/ Dictionary / Index H halogenate: Meaning and Definition of Find definitions for: hal•o•gen•ate Pronunciation: (hal'u-ju-nāt", hā'lu-), [key] — -at•ed, -at•ing. to treat or combine with a halogen. to introduce a halogen into (an organic compound). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. halogen halogen lamp Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language