photoactinic

[foh-toh-ak-tin-ik]

pho·to·ac·tin·ic

[foh-toh-ak-tin-ik]
adjective
emitting radiation having the chemical effects of light and ultraviolet rays, as on a photographic film.

Origin:
photo- + actinic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Photoactinic has a plethora of syllables.
So is supercalifragilisticexpialidocious. Does it mean:
given to using long words.
(used as a nonsense word by children to express approval or to represent the longest word in English.)
Collins
World English Dictionary
photoactinic (ˌfəʊtəʊækˈtɪnɪk)
 
adj
emitting actinic radiation

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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