cleithrum
Noun
Meaning
cleithrum (plural cleithra)
(ichthyology) A large bone in fishes, which extends upward from the base of the pectoral fin and anchors to the cranium above the gills, forming the posterior edge of the gill chamber.
Noun
cleithrum (plural cleithra)
(ichthyology) A large bone in fishes, which extends upward from the base of the pectoral fin and anchors to the cranium above the gills, forming the posterior edge of the gill chamber.