activator

英['æktiveitә]

n. 活化剂, 催化剂, 触媒剂\n[化] 助催化剂; 活化剂; 激活剂; 激活剂发光材料

n. (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