activation

activation — noun

1. the process by which a device, software feature, account, or biological or chemi

1.nounC1
Definition

the process by which a device, software feature, account, or biological or chemical reaction is switched on so that it begins to function or take effect.

Example

Activation of the new SIM card took only a few minutes at the phone shop.

noun + of + [device]

Anaya read the manual carefully before the activation of her smart speaker.

Common collocations
  • activation code
  • activation key
  • activation fee
  • activation link
  • muscle activation
  • card activation
Synonyms
  • initiation

    more formal; suggests a deliberate first step in a longer process

  • triggering

    stresses a quick cause-and-effect start, often automatic

  • startup

    informal; mostly used for computers and machines

Antonyms
  • deactivation

    the direct opposite — switching something off so it no longer works

  • shutdown

    ending operation, especially of a computer or system

Grammar Patterns

activation of [noun]

Usage Note

Almost always uncountable and almost always followed by 'of' or used as a noun modifier (activation code, activation key, activation fee). Rarely used in casual conversation; common in technology, science, and customer-service contexts.

Common Mistakes

I did an activation on my phone yesterday.
I activated my phone yesterday.
for a single personal action, use the verb 'activate'; the noun 'activation' usually appears in formal or technical writing.

Word family

Synonym discussion

Sense: noun/1

All four words describe the moment something begins to work, but they differ in tone and typical context. 'Activation' is the most neutral and is the standard term for switching on a device, an account, or a biological or chemical process — for example, 'activation of the alarm' or 'muscle activation'. 'Initiation' is more formal and often suggests a planned first step in a longer sequence, such as 'initiation of legal proceedings'. 'Triggering' highlights a quick cause-and-effect reaction, usually automatic, as in 'triggering of the airbag'. 'Startup' is informal and almost always refers to computers, engines, or new businesses, as in 'a slow startup time'. Choose 'activation' when you need a clear, technical-sounding noun for turning something on.

activation ↗initiation ↗triggeringstartup ↗

Common collocations

Nouns

  • activation code
  • activation key
  • activation fee
  • activation link
  • activation energy
  • muscle activation

Adverbs

Phrases

  • one-click activation
  • successful activation
  • delayed activation

Prepositions

  • activation of
  • upon activation
  • after activation
  • before activation

Etymology

LatinLate LatinEnglish

Formed in the early 1600s from the verb 'activate' plus the noun-forming suffix '-ation'. The verb 'activate' itself comes from Latin 'activus' (meaning 'active, doing'), through the related Latin verb 'agere' (to do, to drive). The modern technical meaning — switching on a device, account, or chemical reaction — developed in the 19th and 20th centuries with the rise of machines, electronics, and laboratory science.