/ Dictionary / Index H hiddenite: Meaning and Definition of Find definitions for: hid•den•ite Pronunciation: (hid'n-īt"), [key] — n. Mineral. a rare, transparent variety of spodumene, colored yellow-green to emerald-green by chromium: used as a gem. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hiddenite (Thesaurus) hidden agenda hidden tax Related Content Daily Word Quiz: rarefied Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language