单词 | antenna |
释义 | antennan. 1. a. Each of a pair or pairs of sensory appendages on the heads of insects, crustaceans, and some other arthropods; a feeler. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > [noun] > member of > parts of > antenna fore-yard1658 sailyard1658 pointers1664 antenna1668 palpus1803 palp1835 1668 Bp. J. Wilkins Ess. Real Char. ii. v. 127 The lesser [horned beetle]..having Antennæ on each side of his snout or horn. 1698 B. Allen in Philos. Trans. (Royal Soc.) 20 377 The Antennæ proceeded from under the Eyes. 1713 W. Derham Physico-theol. viii. iii. 401 Insects clean their Eyes with their Fore-legs, as well as Antennæ. 1826 J. M. Good Bk. Nature II. i. 24 The antennas of the butterflies. 1880 T. H. Huxley Crayfish 24 The Antennæ are organs of touch. 1940 G. S. Carter Gen. Zool. Invertebr. viii. 164 In mantids an amputated antenna has been found to regenerate as a leg. 1974 W. Condry Woodlands iv. 56 The tanner beetle (Prionus coriarius), a strange insect..with heavy-looking saw-like antennae. 2009 N.Y. Times (National ed.) 20 Oct. d3/4 The Kenyon cells also receive messages about odors from receptors on the fly's antennae. b. In a variety of invertebrates other than insects: any of various sensory papillae, projections, hairs, etc., which may occur in different locations and also singly. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] > member of > sense organ antenna1827 1827 Zool. Jrnl. 3 334 These [tentacula on the head of the polychaete worm] from their situation must be the antennæ of Savigny, a denomination to which I feel disposed to object, since they have nothing in their structure, nor probably in their function, analogous to the antennæ of insects. 1848 K. Grant Hooper's Lexicon Medicum (ed. 8) 119/2 Annelida... the head usually provided with antennae and numerous simple eyes. 1886 A. G. Bourne in Encycl. Brit. XXI. 5/2 A structure found in many Rotifers, and variously known as the ‘calcar’, ‘siphon’, ‘tentaculum’, or ‘antenna’. 1957 Jrnl. Animal Ecol. 26 267 An antenna, numerous thoracic appendages, and the coiled gut were present. 2001 G. W. Rouse & F. Pleijel Polychaetes lxviii. 269/1 The caruncle bears an..‘occipital’ antenna that is not homologous with the median antenna found in Aciculata. 2. figurative. In plural. The means of instinctively detecting and interpreting subtle signs; receptive senses. ΚΠ 1811 L.-M. Hawkins Countess & Gertrude I. xxii. 376 Nothing could overcome those instinctive feelings, the antennæ of our duty. 1855 O. W. Holmes Poems 214 Go to yon tower, where busy science plies Her vast antennæ, feeling thro' the skies. 1918 E. Pound Pavannes & Divisions 43 My soul's antennæ are prey to such perturbations. 1959 Listener 17 Dec. 1082/1 This is where an author with sound learning, a seeing eye, and sensitive ‘antennae’ can be of great assistance. 2005 Sydney Morning Herald 26 Dec. (Summer Herald Suppl.) 7/1 He ducks and weaves through the streets of Paris with his antennae up, alert to every pretty girl who crosses his path. 3. Botany. In orchids of the genus Catasetum: either of a pair of long slender sensitive processes of the rostellum of the flower, which when touched cause the ejection of the pollinium. ΘΚΠ the world > plants > particular plants > cultivated or valued plants > particular cultivated or ornamental plants > particular flower or plant esteemed for flower > [noun] > orchids > parts of cullions1611 thyrsus1704 labellum1810 retinaculum1821 rostellum1821 caudicle1830 pseudobulb1832 massula1856 antenna1862 clinandrium1864 bucket1871 slipper1902 1862 C. Darwin On Var. Contrivances Orchids Fertilised 225 When the right-hand antenna..is touched, the pollinium is instantly ejected. 1874 J. Lubbock Wild Flowers (1882) 175 Insects alight as usual on the lip of the flower, and it will be seen that in front of it are two long processes called antennæ. 1978 T. B. Croat Flora Barro Colorado Island 280/1 The pollinia are ejected with any disturbance of the anther or antennae. 2005 Representations 89 131 When touched by a proboscis or a pencil, the left-hand antenna will fling the pollinium disc from the chamber. 4. A wire, rod, or other structure by which airborne radio waves are transmitted or received, usually as part of a radio or television transmission or receiving system; = aerial n. 3. ΘΚΠ society > communication > telecommunication > radio communications > radio equipment > [noun] > aerial radiator1897 aerial wire1899 aerial1902 antenna1902 loop antenna1906 loop aerial1913 twin aerial1913 frame aerial1916 loop1922 beam aerial1926 cage aerial1926 Adcock1928 dipole1929 V antenna1932 beam antenna1935 rig1935 horn1936 whip1940 whip aerial1941 whip antenna1943 polyrod1945 unipole1945 slot aerial1946 slot antenna1946 dish1948 quad1951 V aerial1961 dish aerial1962 rectenna1964 omni-antenna1966 monopole1974 the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > [noun] > device receiving signal > antenna for radio waves aerial wire1899 aerial1902 antenna1902 sectoral horn1939 rhombic1940 1902 J. A. Fleming in Encycl. Brit. XXXIII. 230/2 The great improvement introduced by Marconi was the employment of this vertical air-wire, aerial, antenna, or elevated conductor. 1920 Sci. Amer. 29 May 593/2 The investigation of the properties and phenomena of audio waves and antennas. 1922 R. Glazebrook Dict. Appl. Physics II. 1044/1 Electric waves..received on the antennae of wireless stations. 1960 Daily Tel. 22 Feb. 14 The radar antenna shown above..has an 84-ft. ‘dish’. 1979 Maclean's 8 Oct. 45/1 Aluminum dish antennas..sprouting like tin mushrooms on community-centre roofs and in backyards. 2013 PC Pro Mar. 85/2 On the top are two antennas, both of which screw into SMA connectors. 5. A wire that attaches a type of naval contact mine to a buoy and triggers the explosive on contact with a metal hull. ΘΚΠ society > armed hostility > hostilities at sea > naval weapons and equipment > [noun] > mine > parts of mine sinker?1881 antenna1918 1918 Proc. U.S. Naval Inst. 44 666 I hope..to see a well directed rifle shot from the little yacht break one of the four antennae surmounting a mine. 1947 10 Eventful Years IV. 632 Antenna mine, a large naval mine..exploding on contact with a metal object. 1995 J. H. Ferguson Through Canad. Periscope xi. 130 While underwater, P34 had come in contact with the antenna of a mine. Compounds General attributive (chiefly in sense 4). ΚΠ 1859 Papers & Proc. Royal Soc. Tasmania 3 ii. 317 To this group is united also the genus Lyctus,..whose chief characteristic is a double, instead of a treble antenna-tip. 1906 J. A. Fleming Princ. Electr. Wave Telegr. ix. 556 This is dissipated..as heat in the antenna and antenna circuit. 1922 R. Glazebrook Dict. Appl. Physics II. 1038/1 The condenser C is intended to represent the antenna capacity, and R..the same power as is actually occasioned by the antenna resistance and radiation. 1940 Chambers's Techn. Dict. 39/1 Antenna array, a group of two or more antennae spacially arranged to have particular directional radiating and/or receiving properties. 1946 Electronic Engin. 18 20 An automatic V.H.F. direction finder using a fixed..antenna system. 1963 Ann. Reg. 1962 447 The U.S.S.R. built the highest tower in Europe..a height of 1,383 feet with its antenna mast. 2004 Tele-Satellite Internat. July 74/3 The Atlantic Bird 1 satellite at 12.5° west is supposed to be constantly receivable with a maritime antenna system. Derivatives anˈtenna-ˌlike adj. resembling an antenna, esp. that of an insect; long, thin, and flexible. ΚΠ 1814 Edinb. Encycl. (1830) VII. 415/1 Scutum depressed and transparent; anterior feet antenna-like. 1910 Astrophysical Jrnl. 32 35 The countless antenna-like filaments surrounding the nebula. 2001 N.Y. Times 11 Dec. (Washington Final ed.) d5/1 Lobsters pick up odors with antennalike appendages, called antennules. This entry has been updated (OED Third Edition, March 2016; most recently modified version published online December 2021). < n.1668 |
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