About The Word Spiracle
Learn about the word Spiracle to help solve your crossword puzzle. Discover Spiracle definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Spiracle
| Spiracle Definition And Meaning |
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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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