Meaning of branchiostegal

bran•chi•os•te•gal

Pronunciation: (brang"kē-os'ti-gul), [key]
— Ichthyol. Ichthyol.
—n.
  1. Also calledone of the long, curved bones just below the operculum, supporting the gill membranes.
—adj.
  1. of or pertaining to the branchiostegals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.