Activity
activation action
ac·tiva·tion ac·tion
Definitions related to activation action:
  • (activate) In biology, to stimulate a cell in a resting state to become active. This causes biochemical and functional changes in the activated cell.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • (activation) To cause something to start or to stimulate activity.
    NCI
    U.S. National Cancer Institute, 2021
  • Activation, in psychology, the stimulation of the cerebral cortex into a state of general wakefulness, or attention. Activation proceeds from various portions of the brain, but primarily from the reticular formation, the nerve network in the midbrain that monitors ingoing and outgoing sensory and...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2025
Try this search on: Farlex, Merriam-Webster, Oxford Dictionary, or Wordnik

This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.