/ Dictionary / Index H hydroxylamine: Meaning and Definition of Find definitions for: hy•drox•yl•a•mine Pronunciation: (hī-drok"su-lu-mēn', -sul-am'in), [key] — n. an unstable, weakly basic, crystalline compound, NHO, used as a reducing agent, analytical reagent, and chemical intermediate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydroxyl hydroxylase Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language