agonist

noun

Pronunciation: ˈæɡənɪst

Definition

A substance that initiates a physiological response when combined with a receptor.

Examples

• The drug acts as an agonist to stimulate the brain's dopamine receptors.

• Scientists are developing a new agonist to help treat chronic pain more effectively.

• Unlike an antagonist that blocks a receptor, an agonist activates it to produce a biological effect.

How to Use agonist

agonist for (prepositional phrase)

A substance that acts on a specific receptor type. — "This compound is a potent agonist for the serotonin receptor."

act as an agonist (collocation)

To function in the capacity of an agonist. — "The medication is designed to act as an agonist in the central nervous system."

Synonyms of agonist

Words with a similar meaning to agonist:

• activator
• stimulant
• trigger
• ligand

Antonyms of agonist

Words with the opposite meaning to agonist:

• antagonist

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