extinction
ex·tinc·tion
noun
1.
2.
3.
the reduction of the intensity of radiation as a consequence of absorption and radiation
4.
- “they think a meteor cause the extinction of the dinosaurs”
5.
a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
6.
Origin
From late Middle English, borrowed from Latin extinctio (“extinction, annihilation”), from extinguere, past participle extinctus (“to extinguish”); see extinguish.
Phrases
- Cretaceous–Paleogene extinction event
Related words
Word family
Part of
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.