English definition of Antenna

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Definition of antenna

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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..

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Scaphocerite :: Scaphocerite (n.) A flattened plate or scale attached to the second joint of the antennae of many Crustacea.

Knobbed :: Knobbed (a.) Containing knobs; full of knobs; ending in a nob. See Illust of Antenna.

Basicerite :: Basicerite (n.) The second joint of the antennae of crustaceans.

Antenna :: 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..

Antenniform :: Antenniform (a.) Shaped like antennae.

Myriapoda :: Myriapoda (n. pl.) A class, or subclass, of arthropods, related to the hexapod insects, from which they differ in having the body made up of numerous similar segments, nearly all of which bear true jointed legs. They have one pair of antennae, three pairs of mouth organs, and numerous trachaae, similar to those of true insects. The larvae, when first hatched, often have but three pairs of legs. See Centiped, Galleyworm, Milliped..

Serricorn :: Serricorn (n.) Any one of a numerous tribe of beetles (Serricornia). The joints of the antennae are prominent, thus producing a serrate appearance. See Illust. under Antenna..

Preocular :: Preocular (a.) Placed just in front of the eyes, as the antennae of certain insects..

Pinion :: Pinion (n.) A moth of the genus Lithophane, as L. antennata, whose larva bores large holes in young peaches and apples..

Clavated :: Clavated (a.) Club-shaped; having the form of a club; growing gradually thicker toward the top. [See Illust. of Antennae..

Antennae :: Antennae (pl. ) of Antenn.

Nauplius :: Nauplius (n.) A crustacean larva having three pairs of locomotive organs (corresponding to the antennules, antennae, and mandibles), a median eye, and little or no segmentation of the body..

Nodose :: Nodose (a.) Having nodes or prominences; having the alternate joints enlarged, as the antennae of certain insects..

Long-horned :: Long-horned (a.) Having a long horn or horns; as, a long-horned goat, or cow; having long antennae, as certain beetles (Longicornia)..

Antennule :: Antennule (n.) A small antenna; -- applied to the smaller pair of antennae or feelers of Crustacea.

Incrassated :: Incrassated (a.) Swelled out on some particular part, as the antennae of certain insects..

Taxicorn :: Taxicorn (n.) One of a family of beetles (Taxicornes) whose antennae are largest at the tip. Also used adjectively.

Biserrate :: Biserrate (a.) Serrate on both sides, as some antennae..

Infraocular :: Infraocular (a.) Situated below the eyes, as the antenna of certain insects..

Immortelle :: Immortelle (n.) A plant with a conspicuous, dry, unwithering involucre, as the species of Antennaria, Helichrysum, Gomphrena, etc. See Everlasting..