noun · 7 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˌæktɪˈveɪʃn̩/
General-American:/ˌæktəˈveɪʃən/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -eɪʃən
CMU ARPABET:AE2 K T AH0 V EY1 SH AH0 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Making active and effective; bringing into a state of activity.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The process of making a radioisotope by bombarding a stable element with neutrons or protons.
Definition source: English Wiktionary via Wiktextract
stimulation of activity in an organism or chemical
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: inactivation
Broader terms: stimulation
Narrower terms: indweller
History
Etymology
Etymology tree Proto-Indo-European *h2eǵ- Proto-Indo-European *-eti Proto-Indo-European *h2éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus ▲ Ancient Greek ἐνεργητῐκός (energētĭkós)sl. Latin āctīvusbor. Old French actifbor. Middle English actyf English active Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin -ātiōlbor. Old French -ationbor. Middle English -acioun English -ation ▲ English active Proto-Indo-European *-h2 Proto-Indo-European *-éh2 Proto-Indo-European *-tós Proto-Indo-European *-eh2tos Proto-Italic *-ātos Latin -ātuslbor. English -ate English activate ▲ English -ation English -ion English activation From active or activate + -ation
Across languages
Translations
44 source translations are retained for this English entry.
Bulgarian:
активи́ране
(aktivírane)
— making active
Catalan:
activació
— making active
Chinese Mandarin:
激活
(jīhuó)
— making active
Czech:
aktivace
— making active
Esperanto:
aktivigo
— making active
Esperanto:
funkciigo
— making active
Finnish:
aktivointi
— making active
Finnish:
aktivaatio
— making active
French:
activation
— making active
Georgian:
აქტივაცია
(akṭivacia)
— making active
Georgian:
გააქტიურება
(gaakṭiureba)
— making active
German:
Aktivierung
— making active
German:
Aktivieren
— making active
Hungarian:
aktiválás
— making active
Icelandic:
virkjun
— making active
Indonesian:
pengaktifan
— making active
Indonesian:
aktivasi
— making active
Italian:
attivazione
— making active
Norman:
activisâtion
— making active
Polish:
aktywacja
— making active
Polish:
uaktywnianie
— making active
Portuguese:
ativação
— making active
Romanian:
activație
— making active
Romanian:
activare
— making active
Russian:
актива́ция
(aktivácija)
— making active
Russian:
активиза́ция
(aktivizácija)
— making active
Serbo-Croatian:
aktivácija
— making active
Slovak:
aktivizácia
— making active
Spanish:
activación
— making active
Tagalog:
sabilos
— making active
Turkish:
aktivasyon
— making active
Ukrainian:
актива́ція
(aktyvácija)
— making active
Vietnamese:
kích hoạt
— making active
French:
activation
— making radioisotope
German:
Aktivierung
— making radioisotope
Italian:
attivazione
— making radioisotope
Portuguese:
activação
— making radioisotope
Spanish:
activación
— making radioisotope
Finnish:
aktivaatio
— process through which molecules are made able to react
French:
activation
— process through which molecules are made able to react
Italian:
attivazione
— process through which molecules are made able to react
Portuguese:
ativação
— process through which molecules are made able to react
Spanish:
activación
— process through which molecules are made able to react
Tagalog:
sabilos
— process through which molecules are made able to react