Actinology is the study of the chemical effects of High-energy visible light and ultraviolet light. Actinology is derived from Greek aktino, meaning a radiant force, and the English suffix logy, meaning the study of. ...
• (n.) The science which treats of rays of light, especially of the actinic or chemical rays.
<study> The science which treats of rays of light, especially of the actinic or chemical rays. ... Origin: Gr, ray. ... (04 Mar 1998) ... 
Ac`ti·nol'o·gy noun [ Greek ..., ..., ray + -logy .] The science which treats of rays of light, especially of the actinic or chemical rays. 
actinology 1. The science of photochemistry or the science of the chemical effects of light. 2. The study of radiant energy.
the science that deals with actinism.