#activator

• Activant — That which activates, accelerates, or stimulates a chemical process, a physical reaction, or a biological function; a substance or structural agent added to a system to increase its reactivity, reaction rate, or operational efficiency. It acts as a positive catalyst within a specific environment.
• Activator — A substance, apparatus, or structural factor that initiates, intensifies, or accelerates a physical process, a chemical reaction, or a biological function; (as an adjective) having the property of activating or stimulating a latent system. It acts as a triggering agent within a controlled environment.
• Activator — A substance, device, or structural factor that initiates, accelerates, or intensifies a chemical reaction, an industrial process, or a biological function; (as an adjective) that induces or stimulates a latent activity. In genetics, it represents a regulatory protein that increases the transcription rate of a specific gene.
• Agonist — A chemical substance, drug, or hormone that binds to a specific cellular receptor and triggers a biological response, mimicking the action of an endogenous compound; in muscle physiology, it designates a muscle whose contraction directly produces a specific movement.