Definition of Spiracle in English :
Define Spiracle in English
Spiracle meaning in English
Meaning of Spiracle in English
Pronunciation of Spiracle in English
Spiracle pronunciation in English
Pronounce Spiracle in English
Spiracle
see synonyms of spiracleNoun
1. spiracle
a breathing orifice
WordNet Lexical Database for English. Princeton University. 2010.
Spiracle
see synonyms of spiraclenoun
1.
any of several paired apertures in the cuticle of an insect, by which air enters and leaves the trachea
2.
a small paired rudimentary gill slit just behind the head in skates, rays, and related fishes
3.
any similar respiratory aperture, such as the blowhole in whales
4. geology
a protrusion of sediment into a lava flow, formed by the explosive transition of water into steam
Collins English Dictionary. Copyright © HarperCollins Publishers
Spiracle
see synonyms of spiracle noun
1.
a small opening allowing the outer air to come through into a confined space; air hole
2. Geology
a small vent formed on the surface of a thick lava flow
3. Zoology
an aperture for breathing, as
a.
any of the small external openings of the tracheal respiratory system in most terrestrial arthropods, ordinarily along the sides of certain thoracic and abdominal segments; stigma
b.
any of various similar openings for the passage of air or respiratory water, as in
tadpoles
c.
blowhole (sense 1)
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.
Spiracle
see synonyms of spiraclen.
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.
The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.