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  • switch-on
    switch-on
    noun
    the act or process of switching on an ignition, light, appliance, etc.
  • switch on
    switch on
    verb
    to cause (a device) to operate by or as if by moving a switch, knob, or lever; turn on
Synonyms

switch-on

American  
[swich-on, -awn] / ˈswɪtʃˌɒn, -ˌɔn /

noun

  1. the act or process of switching on an ignition, light, appliance, etc.


switch on British  

verb

  1. to cause (a device) to operate by or as if by moving a switch, knob, or lever; turn on

  2. informal (tr) to produce (charm, tears, etc) suddenly or automatically

  3. informal (tr) (now slightly dated) to make up-to-date, esp regarding outlook, dress, etc

  4. slang (tr) to arouse emotionally or sexually

  5. slang (intr) to take or become intoxicated by drugs

  6. slang (tr) to introduce (someone) to drugs

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

switch on Idioms  
  1. Produce as if operating by a control, as in She switched on the charm as soon as he walked in. [Mid-1900s] Also see switch off.


Etymology

Origin of switch-on

Noun use of verb phrase switch on

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The council said Christmas switch-on events would take place in Halesowen on 15 November, in Brierley Hill and Stourbridge on 22 November, in Sedgley on 23 November and in Dudley on 6 December.

From BBC Mar. 30, 2025

She said the switch-on fun would also feature fireworks and refreshments.

From BBC Dec. 7, 2024

About 200 people are expected to attend a lights switch-on from 18:30 GMT in which the tree will glow with 1,000 lights.

From BBC Dec. 7, 2024

Councils have already cancelled weekend Christmas light switch-on events in Perth and Renfrew.

From BBC Nov. 22, 2024

The switch-on is cancelled, the start of late-night shopping delayed for a week.

From BBC Nov. 22, 2023

In addition to acting as an ACC inhibitor, it activates PPARα and PPARδ, cellular receptors that switch on genes involved in taking up fat and burning it for energy.

From Science Daily Aug. 23, 2026

The tools switch on for the new year the same season the guardrail comes off.

From Slate Aug. 21, 2026

Two were broadcasting their locations as they crossed and a third appeared to switch on its location tracker just past the line.

From BBC Jun. 17, 2026

The idea, in a nutshell, is to switch on the immune system and starve the cancer at the same time.

From The Wall Street Journal Jun. 6, 2026

Inside the apartment, Arturo flipped the light switch on the wall and a bare bulb in the ceiling flashed on.

From "The Book of Unknown Americans" by Cristina Henríquez

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