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Dictionary Entry

reactive

adjective

Find the meaning of the word reactive, plus dictionary definition, pronunciation, thesaurus-style synonyms, antonyms, and related vocabulary.

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Meaning

Dictionary meaning in a clear, student-friendly format.

Responding quickly to something or having a tendency to react; showing a reaction.

Example Sentence

The new security system is highly reactive, immediately alerting authorities to any unauthorized access attempts.

Usage Note

Describes individuals, systems, or materials that readily respond to external influences or stimuli. It's common in science (chemical reactions) and psychology (emotional responses).