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spiny puffer
Spiny rat
spiny softshell
spiny talinum
spiny-backed
spiny-edged
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spiny-finned fish
spiny-headed worm
spiny-leafed
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Spiodea
SPipistrellus hesperus
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spiraea
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Full-text Search for "Spiracle"
1906


Spiracle definitions

Webster's 1828 Dictionary

SPIR'ACLE, n. [L. spiraculum, form spiro, to breathe.]
1. A small aperture in animal and vegetable bodies, by which air or other fluid is exhaled or inhaled; a small hole, orifice or vent; a pore; a minute passage; as the spiracles of the human skin.
2. Any small aperture, hole or vent.

WordNet (r) 3.0 (2005)

n
1: a breathing orifice

Merriam Webster's

noun Etymology: Middle English, from Latin spiraculum, from spirare to breathe Date: 15th century 1. a breathing hole ; vent 2. a breathing orifice: as a. blowhole 2 b. an external tracheal aperture of a terrestrial arthropod that in an insect is usually one of a series of small apertures located along each side of the thorax and abdomen see insect illustration spiracular adjective

Oxford Reference Dictionary

n. (also spiraculum) (pl. spiracles or spiracula) an external respiratory opening in insects, whales, and some fish. Derivatives: spiracular adj. Etymology: L spiraculum f. spirare breathe

Webster's 1913 Dictionary

Spiracle Spir"a*cle, n.[L. spiraculum, fr. spirare to breathe: cf. F. spiracule. See Spirit.] 1. (Anat.) The nostril, or one of the nostrils, of whales, porpoises, and allied animals. 2. (Zo["o]l.) (a) One of the external openings communicating with the air tubes or trache[ae] of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera. (a) A tubular orifice communicating with the gill cavity of certain ganoid and all elasmobranch fishes. It is the modified first gill cleft. 3. Any small aperture or vent for air or other fluid.

Soule's Dictionary of English Synonyms

n. Aperture (especially in animal and vegetable bodies), blowhole, vent, orifice, pore.

Moby Thesaurus

air duct, air hole, air passage, air shaft, air tube, airway, armhole, avenue, blowhole, breathing hole, bullet-hole, bunghole, channel, chute, cringle, deadeye, debouch, door, egress, emunctory, escape, estuary, exhaust, exit, eye, eyelet, floodgate, flume, gasket, grommet, guide, keyhole, knothole, loop, loophole, louver, louverwork, manhole, mousehole, naris, nostril, opening, out, outcome, outfall, outgate, outgo, outlet, peephole, pigeonhole, pinhole, placket, placket hole, pore, port, porthole, punch-hole, sally port, shaft, sluice, spilehole, spout, tap, touchhole, transom, vent, ventage, venthole, ventiduct, ventilating shaft, ventilator, vomitory, way out, weir, wind tunnel



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