activator

Từ điển WordNet v3.1 - WordNet Dictionary

noun

(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
• Ant:
inhibitor
• Derivationally related forms:
activate
• Topics:
biology, biological science
• Hypernyms:
substance
• Hyponyms:
activating agent, catalyst, accelerator, sensitizer, sensitiser