Dictionary Check: extinction

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"extinction" is a valid word!

Scrabble 19 points

Words with Friends 22 points

noun

no longer active; extinguished

Example: "the extinction of the volcano"

noun

no longer in existence

Example: "the extinction of a species"

Synonyms:

noun

the reduction of the intensity of radiation as a consequence of absorption and radiation

noun

complete annihilation

Example: "they think a meteor caused the extinction of the dinosaurs"

Synonyms:

noun

a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus

Synonyms:

noun

the act of extinguishing; causing to stop burning

Example: "the extinction of the lights"

Synonyms:

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