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Pronunciation varies by accent · adjective
That does not produce photochemical reactions (and can be used as a safelight in a photographic darkroom) (of light).
Use inactinic when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Inactinic means That does not produce photochemical reactions (and can be used as a safelight in a photographic darkroom) (of light).
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use inactinic where its definition matches the intended context.
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