SPIRACLE

spiracle

(noun) a breathing orifice

Source: WordNet® 3.1


Etymology

Noun

spiracle (plural spiracles)

A pore or opening used (especially by arthropods and some fish) for respiration.

The blowhole of a whale, dolphin or other similar species.

Any small aperture or vent for air or other fluid.

Anagrams

• calipers, earclips, replicas

Source: Wiktionary


Spir"a*cle, n.Etym: [L. spiraculum, fr. spirare to breathe: cf. F. spiracule. See Spirit.]

1. (Anat.)

Definition: The nostril, or one of the nostrils, of whales, porpoises, and allied animals.

2. (Zoöl.) (a) One of the external openings communicating with the air tubes or tracheæ 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.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

27 December 2024

OBLIGATE

(adjective) restricted to a particular condition of life; “an obligate anaerobe can survive only in the absence of oxygen”


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