switches, switched, switching

to switch on
phrasal verbC

Activate a device or system by pressing a button or flipping a switch
  • 1Please switch on the lights.
  • 2He switched on the computer to start working.
To make something work by pressing a button or moving a switch. It's like turning on a light by pushing a button or flipping a switch. It's how you start a machine or device to make it start working.
Card
Remember, some devices may have a delay before they fully switch on. Be patient and wait a few seconds after pressing the button or flipping the switch before assuming it's not working.
in an exhibition hall
Illuminating the Exhibit
Elizabeth
It's getting a bit dark in here, don't you think?
Richard
Yes, let me switch on the lights for a better view.
Elizabeth
Ah, that's much better. The paintings look more vibrant now.
Richard
Absolutely, lighting makes all the difference.
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Similar to "to switch on":
  • 1turn on
  • 2power up