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

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

Longicornia :: Longicornia (n. pl.) A division of beetles, including a large number of species, in which the antennae are very long. Most of them, while in the larval state, bore into the wood or beneath the bark of trees, and some species are very destructive to fruit and shade trees. See Apple borer, under Apple, and Locust beetle, under Locust..

Clavicorn :: Clavicorn (a.) Having club-shaped antennae. See Antenna.

Scyllarian :: Scyllarian (n.) One of a family (Scyllaridae) of macruran Crustacea, remarkable for the depressed form of the body, and the broad, flat antennae. Also used adjectively..

Nereis :: Nereis (n.) A genus, including numerous species, of marine chaetopod annelids, having a well-formed head, with two pairs of eyes, antennae, four pairs of tentacles, and a protrusile pharynx, armed with a pair of hooked jaws..

Lamellated :: Lamellated (a.) Composed of, or furnished with, thin plates or scales. See Illust. of Antennae..

Extra-ocular :: Extra-ocular (a.) Inserted exterior to the eyes; -- said of 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..

Antenniferous :: Antenniferous (a.) Bearing or having antennae.

Filiform :: Filiform (a.) Having the shape of a thread or filament; as, the filiform papillae of the tongue; a filiform style or peduncle. See Illust. of AntennAe..

Nematocera :: Nematocera (n. pl.) A suborder of dipterous insects, having long antennae, as the mosquito, gnat, and crane fly; -- called also Nemocera..

Subuliform :: Subulicornes (n. pl.) A division of insects having slender or subulate antennae. The dragon flies and May flies are examples.

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

Acerous :: Acerous (a.) Without antennae, as some insects..

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

Tunicated :: Tunicated (a.) Having each joint buried in the preceding funnel-shaped one, as in certain antennae of insects..

Clavicornes :: Clavicornes (n. pl.) A group of beetles having club-shaped antennae.

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

Club-shaped :: Club-shaped (a.) Enlarged gradually at the end, as the antennae of certain insects..