/ Dictionary / Index H hydroxybutyric acid: Meaning and Definition of Find definitions for: hy•drox'y•bu•tyr'ic ac'id Pronunciation: (hī-drok'sē-by-tir'ik, -drok"-), [key] — Biochem. Biochem. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydroxybenzene hydroxychloroquine 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