spiracle


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spir·a·cle

 (spĭr′ə-kəl, spī′rə-)
n.
1. Zoology A respiratory aperture, especially:
a. Any of several tracheal openings in the exoskeleton of an insect, spider, or other terrestrial arthropod.
b. A small respiratory opening behind the eye of most sharks and rays and certain other fishes.
c. The blowhole of a cetacean.
2. An aperture or opening through which air is admitted and expelled.

[Middle English, from Latin spīrāculum, from spīrāre, to breathe.]

spi·rac′u·lar (spī-răk′yə-lər, spĭ-) adj.

spiracle

(ˈspaɪərəkəl; ˈspaɪrə-)
n
1. (Zoology) any of several paired apertures in the cuticle of an insect, by which air enters and leaves the trachea
2. (Zoology) a small paired rudimentary gill slit just behind the head in skates, rays, and related fishes
3. (Zoology) any similar respiratory aperture, such as the blowhole in whales
4. (Geological Science) geology a protrusion of sediment into a lava flow, formed by the explosive transition of water into steam
[C14 (originally: breath): from Latin spīrāculum vent, from spīrāre to breathe]
spiracular adj
spiˈraculate adj

spi•ra•cle

(ˈspaɪ rə kəl, ˈspɪr ə-)

n.
1. a breathing hole; an opening by which a confined space has communication with the outer air; air hole; blowhole.
2. one of the external orifices of the respiratory system in certain invertebrates.
[1300–50; Middle English < Latin spīrāculum air hole =spīrā(re) to breathe + -culum -cle2]
spi•rac′u•lar (-ˈræk yə lər) adj.

spir·a·cle

(spĭr′ə-kəl, spī′rə-kəl)
An opening through which certain animals breathe, such as the blowhole of a whale or one of the openings in the exoskeleton of an insect.

spiracle

A hole through which a creature breathes, such as in the abdomen of an insect.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spiracle - a breathing orificespiracle - a breathing orifice      
orifice, porta, opening - an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
blowhole - the spiracle of a cetacean located far back on the skull
stigma - an external tracheal aperture in a terrestrial arthropod
Translations
spiracle

spiracle

[ˈspɪrəkl] Nespiráculo m

spiracle

n (of shark, ray etc)Atemloch nt; (of insect also)Stigma nt (spec); (of whale, dolphin)Spritzloch nt
References in classic literature ?
And all the while, jet after jet of white smoke was agonizingly shot from the spiracle of the whale, and vehement puff after puff from the mouth of the excited headsman; as at every dart, hauling in upon his crooked lance (by the line attached to it), Stubb straightened it again and again, by a few rapid blows against the gunwale, then again and again sent it into the whale.
Foolish, whenever you take the meanness and formality of that thing you do, instead of converting it into the obedient spiracle of your character and aims.
If you stand on its summit and look at these two f-shaped spout-holes, you would take the whole head for an enormous bass-viol, and these spiracles, the apertures in its sounding-board.
On every side the seven gables pointed sharply towards the sky, and presented the aspect of a whole sisterhood of edifices, breathing through the spiracles of one great chimney.
recently announced that the California Air Resources Board (ARB) has verified the company's diesel multi-stage filter (DMF) muffler system with or without the Donaldson Spiracle crankcase filter system for 1991 to 2002 model year diesel engines used in on-road applications operating on ultra-low-sulfur diesel.
In some rays the rate of spiracle contractions was episodically recorded.
In normal metamorphosing Xenopus laevis (with a spiracle on the left and right sides), right forelimbs emerged first approximately 50% of the time.
Thorax: Prothoracic spiracle cylindrical, 0.06 mm long (Fig.
consistent: wing venation [21]; spiracle of eighth abdominal segment (female)--opening on the eighth tergite versus on membrane (see [4]; also see Table 1).
11); propodeum with posterior transverse carina complete, strong and sinuous, anterior transverse carina complete and strong, lateral and lateromedian longitudinal carinae present from anterior margin to spiracle level, then with small vestiges (Fig.