(ac-tin-ic) 3 syllables

Definition

adjective. 1 of radiation producing a photochemical effect; 2 of or relating to the chemically active rays of the electromagnetic spectrum

Example Sentence

The stars emit actinic rays as well as light and heat.

Synonyms

type of radiation; producing photochemical effect; of chemically active ray

Antonyms

darkness

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actinic
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