activator

Definitions

A substance that increases the rate of a chemical reaction or makes a catalyst more effective.

A device or agent that initiates or accelerates a process or function.

A protein or other molecule that increases the expression of a gene.

Examples

The chemical activator was added to the mixture to speed up the hardening process of the resin.

In biological research, this protein acts as a transcriptional activator that turns on specific genes.

Synonyms

catalyst stimulant trigger promoter initiator agent impulse

Antonyms

inhibitor suppressor blocker deterrent restrainer deactivator hindrance