antennule

/an-ten-yool/US // ænˈtɛn yul //UK // (ænˈtɛnjuːl) //

天线,天花板,天花板上,天花板的

Definitions

n.名词 noun

1
Zoology.
- : a small antenna, especially one of the foremost pair of a crustacean.

If it is in its natural position, it is not an antennule, but the endopodite of the second or third pair of cephalic appendages.
If straightened out, the left antennule would be about 6.1 mm.
Make a drawing of the surface of part of an eye; also of an antennule; and of an antenna.
Measured along the curvature, the same antennule is about 11 mm.