Definitions for: Reactive


[adj] (chemistry and physics) participating readily in reactions; "sodium is a reactive metal"; "free radicals are very reactive"
[adj] tending to react to a stimulus; "the skin of the geriatric is less reactive than that of younger persons"- Louis Tuft



Webster (1913) Definition: Re*act`ive, a. [Cf. F. r['e]actif.]
Having power to react; tending to reaction; of the nature of
reaction. -- Re*act"ive*ly, adv. -- Re*act"ive*ness, n.

Synonyms: activated, excited, oxidizable, sensitive, unstable

Antonyms: unreactive

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