activation
/ˌæktɪˈveɪʃn̩/
Proposed by a contributor, not yet supported by evidence.
Also seen as: activations
Sense 1
Meaning · English
Making active and effective; bringing into a state of activity.
Noun
Examples
Alarm activations cause the driver to have to stop the train - and in some cases walk back to reset it. The activations caused 1,032 minutes of delays and nine cancellations.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Sense 2
Meaning · English
The process of making a radioisotope by bombarding a stable element with neutrons or protons.
Noun
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).
Common questions
What does “activation” mean?
Making active and effective; bringing into a state of activity.
Is “activation” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.