hyperactive(redirected from hyperaction)
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1. Highly or excessively active: a hyperactive thyroid gland.
2. Characterized by or displaying excessive motor activity, restlessness, and often talkativeness: hyperactive behavior; hyperactive children.
(Psychology) abnormally active
hy•per•ac•tive(ˌhaɪ pərˈæk tɪv)
1. unusually or abnormally active: a hyperactive imagination.
2. (of children) displaying excessive physical activity sometimes associated with neurological or psychological causes.
hy`per•ac′tion (-ˈæk ʃən) n.