English
actinism
From actin- + -ism.
Today it means
noun That property of electromagnetic radiation that leads to the production of photochemical effects
Language periods are conventional ranges, not dates for this word.
Etymograph / actinism
English
From actin- + -ism.
noun That property of electromagnetic radiation that leads to the production of photochemical effects
Language periods are conventional ranges, not dates for this word.
Etymograph / actinism