Ac′ti‐nol″o‐gy (�), n. [Gr. �, �, ray + -logy.] The science which treats of rays of light, especially of the actinic or chemical rays.
Content
Rights and sources
Review source, license and attribution information for this content.
Content
Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.