Bran·chi·os·te·gal a. Anat. Pertaining to the membrane covering the gills of fishes. -- n. Anat. A branchiostegal ray. See Illustration of Branchial arches in Appendix.
Note: ☞ This term was formerly applied to a group of fishes having boneless branchiæ. But the arrangement was artificial, and has been rejected.
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