activator
UKUS
A2
Definitions
n.
A substance or thing that makes a process or reaction active
激活剂，活化剂，触发器
Root Breakdown
Root-derivedactivatedo, act, drive
+
-orone who does, agent
=activator
activate + -or (thing that does) = something that activates a process.
Example Sentences
- 1.
The enzyme acts as an activator for the reaction.