Activator Meaning

/ˈæktəˌveɪtər/
B2

Definition, CEFR level B2, pronunciation, examples, and quiz.

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nounOne who, or that which, activates.

nounSomething that activates a catalyst

The enzyme is a biological activator.
The activator increased the reaction rate.
This chemical compound acts as a powerful activator for the enzyme.
CEFR Practice Quiz
This chemical serves as an ____ for the enzyme reaction in the lab.
CEFR Practice Quiz (Alternate)
Yeast acts as an ____ in the dough, causing it to rise.

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 *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-tós Proto-Indo-European *-eh₂tos Proto-Italic *-ātos Latin -ātuslbor. English -ate English activate Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin -ātor Old French -eorbor. Middle English -our ▲ Latin -torlbor. English -or English activator From activate + -or.

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CEFR Practice Quiz
This chemical serves as an ____ for the enzyme reaction in the lab.
CEFR Practice Quiz (Alternate)
Yeast acts as an ____ in the dough, causing it to rise.

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