diactinic

diactinic

[dahy-ak-tin-ik]
adjective Physics.
capable of transmitting actinic rays.

Origin:
1865–70; di-3 + actinic

diactinism, noun
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diactinic (ˌdaɪækˈtɪnɪk)
 
adj
physics able to transmit photochemically active radiation
 
di'actinism
 
n

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