- the property of radiation by which chemical effects are produced.
Origin of actinism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for actinism
In summer, when the maturing process advances, light and heat increase, and actinism relatively declines.
In the autumn, when the ripening period arrives, light and actinism give way to a greater ratio of heat.
Because blue glass obstructs many of the luminous rays, but it is perfectly transparent to actinism.
The third constituent of the sunbeam is actinism—its property being to produce chemical effects.
As yet, the effects of actinism have been more studied in the inanimate than the organic creation.