Actinism

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Actinism \Ac"tin*ism\, n. [Gr. ?, ? ray.]
     The property of radiant energy (found chiefly in solar or
     electric light) by which chemical changes are produced, as in
     photography.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  actinism
       n : the property of radiation that enables it to produce
           photochemical effects