hypobranchial

adjective
hy·​po·​branchial

Definition of hypobranchial

 (Entry 1 of 2)

1 : situated below the gills : of or relating to the ventral wall of the pharynx specifically : of or relating to the endostyle
2 : of, relating to, or being the segment of a branchial arch between the basibranchial and the ceratobranchial

hypobranchial

noun
\ "\
plural -s

Definition of hypobranchial (Entry 2 of 2)

: a hypobranchial bone or cartilage

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History and Etymology for hypobranchial

Adjective

hypo- + branchial

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