Medical Dictionary

activator ac·ti·va·tor (āk'tə-vā'tər)

  1. An agent that renders another substance active or accelerates a process or reaction.

  2. The fragment produced by chemical cleavage of a proactivator that induces the enzymatic activity of another substance.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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