Auxochrome

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Notion

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Science and technology

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What Wikipedia says

In organic chemistry, an auxochrome (from Ancient Greek αὐξάνω (auxanō) 'increase' and χρῶμα (chrōma) 'colour') is a group of atoms attached to a chromophore which modifies the ability of that chromophore to absorb light.

Excerpt from the Wikipedia article “Auxochrome”, under the CC BY-SA 4.0 license. Read the article on Wikipedia