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on/off

noun as in button

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Classically, by turning on/off several genetic switches, scientists can revert cells to a less specialized stage.

Some critics worry that reform would be like an on/off switch—suddenly and irreversibly changing America forever.

Vaccination works more like a light with a dimmer than an on-off switch, said Slifka.

There was never kiss-and-tell during her on-off relationship with Leonardo DiCaprio.

Other control units have a combination on-off switch and volume control knob.

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