promoter

C1 · Advanced Countable noun Formal

n. someone who actively supports or encourages a particular plan, idea, or cause.

n. a person who advocates for or encourages the adoption of a specific cause, policy, or ideology.

“She has always been a strong promoter of healthy eating in local schools.”

“As a leading promoter of renewable energy, the senator spent years lobbying for stricter carbon emission standards.”

C2 · Proficiency Countable noun Science Technical

n. a specific part of DNA that tells a cell to start making a certain protein.

n. a region of DNA that initiates transcription of a particular gene by providing a binding site for RNA polymerase.

“The scientists studied the promoter to understand why the gene was turned off.”

“Mutations within the promoter region can significantly alter the rate at which a gene is expressed within the organism.”

C2 · Proficiency Countable noun Science Technical

n. a substance that makes a catalyst work better, even though it is not a catalyst itself.

n. a substance added to a catalyst to increase its activity or selectivity in a chemical reaction.

“Adding a small amount of the promoter made the chemical reaction happen much faster.”

“The industrial process relies on a specific metallic promoter to enhance the efficiency of the catalytic converter.”