Actinology
The Century Dictionary and Cyclopedia
noun.
The study of the
Actinozoa
: as, the
actinology
of the South Atlantic.
noun.
That branch of science which investigates the chemical action of light.
the GNU version of the Collaborative International Dictionary of English
noun.
The science which treats of rays of light, especially of the actinic or chemical rays.
Wiktionary, Creative Commons Attribution/Share-Alike License
noun.
The
study
of the effect of
light
on
chemicals
.