branchiostegal

== English == === Etymology === Ancient Greek βράγχιον (bránkhion, “gill (used in the plural)”) + στέγω (stégō, “cover”) +‎ -al === Adjective === branchiostegal (not comparable) (zoology) Of or pertaining to the operculum that covers the gill slits of fish === Noun === branchiostegal (plural branchiostegals) A branchiostegal ray.