reactivegroup

noun
UK /riˈæktɪv ɡruːp/
US /riˈæktɪv ɡruːp/

A reactive group is a part of a molecule that likes to react with other things.

The chemist looked for a reactive group on the molecule before adding the new chemical.


OTHER MEANINGS

2. A set of people who respond quickly to events or problems.

The emergency team is a reactive group that arrives within minutes.

3. A cluster of atoms in a material that causes it to change easily.

The paint contains a reactive group that hardens when exposed to air.

4. A category of substances that combine readily with others in a lab.

Scientists labeled the sample as a reactive group to handle it with care.