Definition

A type of compound that can exist in different forms, which are called tautomers, that can easily change from one form to another.

Example

In chemistry, a tautomer can shift between its different structural forms under certain conditions.

Conversation

Have you ever heard of a tautomer?

I think so, but I’m not entirely sure what it means.

A tautomer is basically a different form of a compound.

Got it! That sounds pretty interesting, actually.

Synonyms & Antonyms

Root Explanation

Tautomer is formed from "tauto-" (from Greek "tautós", meaning the same) and "mer" (from Greek "meros", meaning part). The word refers to compounds that exist in two forms that are interchangeable, hence the idea of 'the same part' in different arrangements.

Memory Tip

Think of 'the same' ('tauto-') and 'part' ('mer') to remember that a tautomer is a compound that can exist in different forms that are essentially the same.

Visually Confused Words