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actinic

[ak-tin-ik] /ækˈtɪn ɪk/
adjective
1.
pertaining to actinism.
Origin
1835-1845
1835-45; actin- + -ic
Related forms
actinically, adverb
nonactinic, adjective
nonactinically, adverb
unactinic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un actinic

actinic

/ækˈtɪnɪk/
adjective
1.
(of radiation) producing a photochemical effect
Derived Forms
actinically, adverb
actinism, noun
Word Origin
C19: from actino- + -ic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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un actinic in Medicine

actinic ac·tin·ic (āk-tĭn'ĭk)
adj.
Of or relating to the chemically active rays of the electromagnetic spectrum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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