2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Reactive \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.
From WordNet r 1.6 [wn]:
reactive
adj 1: (chemistry and physics) participating readily in reactions;
"sodium is a reactive metal"; "free radicals are very
reactive" [ant: {unreactive}]
2: tending to react to a stimulus; "the skin of the geriatric
is less reactive than that of younger persons"- Louis Tuft
more about reactive
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