— hyperaction /huy'peuhr ak"sheuhn/ , n. — hyperactively , adv.
/huy'peuhr ak"tiv/ , adj.
1. unusually or abnormally active: a company's hyperactive growth; the child's hyperactive imagination.
2. (of children) displaying exaggerated physical activity sometimes associated with neurologic or psychologic causes.
3. hyperkinetic.
[ 1865-70; HYPER- + ACTIVE ]