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Definitions from WordNet

Definitions from the Web

Part of Speech: Adjective

Sense 1: Relating to or caused by radiant energy, especially in the ultraviolet or blue-violet part of the electromagnetic spectrum.

Example sentence: The actinic rays from the sun can cause damage to the skin if not protected properly.

Sense 2: Relating to or characterized by photochemical reactions activated by light.

Example sentence: The actinic properties of the dye make it suitable for creating photosensitive materials.

Part of Speech: Noun

Sense 1: A substance or an effect caused by the action of radiant energy.

Example sentence: The actinic of the material allowed for the detection of invisible ink.

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