Definition of antenna
- n. - A movable, articulated organ of sensation, attached to the
heads of insects and Crustacea. There are two in the former, and
usually four in the latter. They are used as organs of touch, and in
some species of Crustacea the cavity of the ear is situated near the
basal joint. In insects, they are popularly called horns, and also
feelers. The term in also applied to similar organs on the heads of
other arthropods and of annelids.
- n. - A movable, articulated organ of sensation, attached to the
heads of insects and Crustacea. There are two in the former, and
usually four in the latter. They are used as organs of touch, and in
some species of Crustacea the cavity of the ear is situated near the
basal joint. In insects, they are popularly called horns, and also
feelers. The term in also applied to similar organs on the heads of
other arthropods and of annelids.