| Pronunciation: | | 'aktu`nizum
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 WordNet Dictionary |
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| | Definition: | |
[n] the property of radiation that enables it to produce photochemical effects |
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ACTINISM is a 8 letter word that starts with A. |
| | See Also: | | property |
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| Webster's 1913 Dictionary |
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| | Definition: | | \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.
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