Definition

A property of radiation that causes chemical changes, especially in the presence of light.

Example

The actinism of sunlight is essential for photosynthesis in plants.

Conversation

Have you heard about actinism and its effects on plants?

Yeah, I read that it can help with photochemical reactions.

It's fascinating how light can influence growth through actinism.

Definitely! Nature has some amazing ways of adapting.

Synonyms & Antonyms

Root Explanation

Actinism is formed from "actin" (from Greek "aktis", meaning ray) and the suffix "-ism" (meaning a practice or belief). The term refers to the property of radiation that causes chemical changes, particularly in relation to light rays.

Memory Tip

Think of 'rays' ('aktis') that have a special 'practice' ('-ism') in causing changes, which helps you remember that actinism relates to the effects of radiation.

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