About The Word Spiracle

Bay Area Crosswords

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Spiracle

Spiracle Meaning & Definition
Spiracle Definition And Meaning

What's The Definition Of Spiracle?

[n] a breathing orifice

Synonyms | Synonyms for Spiracle:

Related Terms | Find terms related to Spiracle:

See Also | blowhole | opening | orifice | porta | stigma

Spiracle In Webster's Dictionary

\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.

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