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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Prawn :: Prawn (n.) Any one of numerous species of large shrimplike Crustacea having slender legs and long antennae. They mostly belong to the genera Pandalus, Palaemon, Palaemonetes, and Peneus, and are much used as food. The common English prawn is Palaemon serratus..

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

Fimbricate :: Fimbricate (a.) fringed, on one side only, by long, straight hairs, as the antennae of certain insects..

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..

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

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..

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..

Squamellae :: Squame (n.) The scale, or exopodite, of an antenna of a crustacean..

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

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

Moniliform :: Moniliform (a.) Joined or constricted, at regular intervals, so as to resemble a string of beads; as, a moniliform root; a moniliform antenna. See Illust. of Antenna..

Pectinated :: Pectinated (a.) Having very narrow, close divisions, in arrangement and regularity resembling those of a comb; comblike; as, a pectinate leaf; pectinated muscles. See Illust. (e) of Antennae..

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

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

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

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

Cudweed :: Cudweed (n.) A small composite plant with cottony or silky stem and leaves, primarily a species of Gnaphalium, but the name is now given to many plants of different genera, as Filago, Antennaria, etc.; cottonweed..

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..

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

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