/ Dictionary / Index H hypobranchial: Meaning and Definition of Find definitions for: hy•po•bran•chi•al Pronunciation: (hī"pu-brang'kē-ul), [key] — adj. Zool. situated below the gills or beneath the branchial arches. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hypoblast hypocalcemia Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language