Definition of "coactivation"

coactivation

noun
countable and uncountable, plural coactivations
1. Activation of two or more things together.
  Quotations
  The coactivation of A and B as the literal and figurative senses of the expression constitutes the recognition of its metaphorical nature.
  1987, Ronald W. Langacker, Foundations of Cognitive Grammar‎, page 169
2. (genetics) A process wherein RNA transcription is increased by a coactivator protein.
3. (medicine) The activation of one muscle coordinately with another.