opercle
/oh-per-kuhl/US // ˈoʊ pər kəl //
厣,手术室,手术
Definitions
n.名词 noun
- 1
- : an operculum, especially the posterior bone of the operculum of a fish.
Examples
In Erpetoichthys only the opercle is distinct among the gill-covers.
The tip of its opercle is prolonged like an ear and jet black in color, with a dash of bright scarlet along its lower edge.
Overlying these is the system of membrane bones already mentioned, including the opercle or gill-cover.
On our sunfish we see that the opercle ends behind in a long and narrow flap, which looks like an ear.
The largest uppermost flat bone of the gill-covers is known as the opercle .
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