Definition, Meaning & Synonyms
spiracle
Noun
/ˈspaɪrɪkəl/
Definition
A small opening or hole that allows the passage of air or water in certain animals.
Examples
- Fish have spiracles located behind their eyes.
- Insects use spiracles to regulate the exchange of gases.
- The spiracle can be critical for the survival of many aquatic creatures.
Meaning
In biology, a spiracle is an external respiratory opening found in many aquatic and terrestrial organisms, primarily in insects and some fish, enabling them to breathe.
Synonyms
- Opening
- Orifice
- Air hole
