reactor.
A person who responds to a suggestion, stimulation or other influence.
Meaning & usage
A person who responds to a suggestion, stimulation or other influence.
A structure used to contain chemical or other reactions.
A device which uses atomic energy to produce heat.
A chemical substance which responds to the presence of, or contact with, another substance.
An electrical component with reactance
Where this word comes from
Etymology tree English react Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin -ātor Old French -eorbor. Middle English -our ▲ Latin -torlbor. English -or English reactor From react + -or.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.