English edit

Etymology edit

Ancient Greek βράγχιον (bránkhion, gill (used in the plural)) + στέγω (stégō, cover) +‎ -al

Adjective edit

branchiostegal (not comparable)

  1. (zoology) Of or pertaining to the operculum that covers the gill slits of fish

Noun edit

branchiostegal (plural branchiostegals)

  1. A branchiostegal ray.