• To start a sequence or process. For example, to enter a computer command to initiate a sequence.
  • To make operational. For example, the adding of liquid to a battery or cell to make it operational.
  • To treat a substance or material to make it more effective for a designated purpose. For example, the treatment of a cathode to improve its thermionic emission.
  • To induce an action. For example, inducing radioactivity in a non-radioactive element by bombarding it with neutrons.
  • To accelerate an action. For example, the use of a catalyst to bond a resin more quickly.

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