releaser

[ ri-lee-ser ]

noun

1. a person or thing that releases.
2. Ethology. a key stimulus, as a sound, odor, moving shape, or patch of color, that elicits a predictable behavioral response in an animal.

Word History and Origins

Origin of releaser¹

1425–75; late Middle English. See release, -er ¹

Example Sentences

In a third (No. 45) the fortieth room contains a golden horse and a golden dog which assist their bold releaser.

From Project Gutenberg

Their reddish facial suffusion serves as a social releaser which elicits hostile behavior and facilitates sex recognition.

From Project Gutenberg

One day she sang of Death the releaser, and Ruark thought, ''Tis come!

From Project Gutenberg

If such music-making is ever to become accepted, then I long for Death the Releaser.

From Project Gutenberg