/ Dictionary / Index B branchiostegous: Meaning and Definition of Find definitions for: bran•chi•os•te•gous Pronunciation: (brang"kē-os'ti-gus), [key] — adj. Ichthyol. branchiostegal. having covered gills. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. branchiostegal branchlet Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language