a.1.(Anat.) Outside of the branchial arches; - said of the cartilages thus placed in some fishes.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Pereopodal disc: a new type of extrabranchial ion-transporting organ in an esturine amphipod, Melita setiflagella (Crustacea).
There is a extra-branchial appendage situated alongside each rhinophore and an extrabranchial appendage on each side of the gill.
The bases of the extrarhinophoral and extrabranchial appendages are basally red with the rest of the legth yellow.