English noun: activator | |||
| 1. | activator (substance) (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription | ||
| Broader (hypernym) | substance | ||
| Narrower (hyponym) | accelerator, activating agent, catalyst, sensitiser, sensitizer | ||
| Domain category | biological science, biology | ||
| Antonyms | inhibitor | ||