activation
UK: ˌæktɪˈveɪʃən | US: ˌæktəˈveɪʃən
n. the process of making something active or operative
n. (biology) the stimulation of a cell or organism to perform its function
n. (chemistry) the initiation of a chemical reaction
The word "activation" derives from the Latin root actus (meaning "a doing" or "a driving"), combined with the suffix -ate (forming verbs) and -ion (forming nouns). The verb "activate" emerged in the 16th century, meaning "to make active," and "activation" later evolved as its nominal form. The morpheme act preserves its core meaning of "doing," while -ion solidifies the word as a noun denoting the process or result of making something active.
The activation of the alarm system prevented a burglary.
Enzyme activation is crucial for metabolic reactions.
The software requires manual activation after installation.
The activation energy of this reaction is relatively high.
His speech led to the activation of emergency protocols.