noun
One who, or that which, activates.
(physical chemistry) Something that activates a catalyst
(biology) Any chemical or agent which regulates one or more genes by increasing the rate of transcription.
(biology) A type of effector that increases the rate of enzyme-mediated reactions.
A type of dopant used in phosphors and scintillators.
(mining) An agent that enables the flotation of a mineral or minerals.
(chiropractic) A hand-held device that delivers a controlled fast thrust to a joint, muscle, etc., to help stimulate nervous system activity.
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