Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of actinism is as below...

Actinic :: Actinic (a.) Of or pertaining to actinism; as, actinic rays..

Actinism :: Actinism (n.) The property of radiant energy (found chiefly in solar or electric light) by which chemical changes are produced, as in photography..

Actino-chemistry :: Actino-chemistry (n.) Chemistry in its relations to actinism.

Tithonicity :: Tithonicity (n.) The state or property of being tithonic; actinism.

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