actinism

[ ak-tuh-niz-uh m ]
/ ˈæk təˌnɪz əm /

noun

the property of radiation by which chemical effects are produced.

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Origin of actinism

First recorded in 1835–45; actin- + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for actinism