|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|a fool or simpleton; ninny.|
|1.||to make active or capable of action|
|2.||physics to make radioactive|
|a. to increase the rate of (a reaction)|
|b. to treat (a substance, such as carbon or alumina) so as to increase powers of adsorption|
|4.||physiol to prepare by arousal (the body or one of its organs (e.g. the brain)) for action|
|5.||to purify (sewage) by aeration|
|6.||(US) military to create, mobilize, or organize (a unit)|
activator ac·ti·va·tor (āk'tə-vā'tər)
An agent that renders another substance active or accelerates a process or reaction.
The fragment produced by chemical cleavage of a proactivator that induces the enzymatic activity of another substance.