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Definition of activator

activator

/ˈæk.tɪ.veɪ.tər/
ac · ti · va · tor
Adverb:actively
•
Plural:activators
•
Adjective:active
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activator Lexical Profile

activator Game Scores & Validity

• noun

1

A chemical agent, enzyme, or protein that initiates or accelerates a chemical reaction or biological process, such as gene transcription.

Example

"Calcium ions serve as a vital activator for numerous enzymes involved in muscle contraction."

2

A person, device, or mechanism that switches on, triggers, or sets a system or process into operation.

Example

"Pressing the manual activator on the wall immediately engaged the emergency sprinkler system."

Synonyms
View all synonyms for activator
Antonyms
View all antonyms for activator

• Rhymes for activator

• Nearby Words

actionable
activate
activation
activator
active
actively
activeness

Cite this Entry

Wordmom. (2026). Definition of Activator. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/activator
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