Definition of hyperactivity in English:

hyperactivity

noun

mass noun
  • 1The condition of being abnormally or extremely active.

    ‘hyperactivity of the thyroid gland’
    • ‘Drugs such as muscle relaxants can be used to control spasms in the muscles and hyperactivity of the muscles.’
    • ‘Some breathing techniques may be contraindicated for those with asthma as they leading to agitated bronchial hyperactivity.’
    • ‘High levels usually cause airway hyperactivity and inflammation.’
    • ‘Swimming happens to be the activity that is most often recommended for children with asthma, because swimming does not produce any bronchial hyperactivity.’
    • ‘Hyperactivity of noradrenaline in the brain has been found to correlate with aggressive behaviour in humans.’
    • ‘There was a hyperactivity of the caloric response in two patients.’
    1. 1.1 Constantly active and sometimes disruptive behaviour, occurring primarily in children.
      ‘pupils deprived of sleep tend to display hyperactivity’
      • ‘Students of all ages will sometimes engage in behavior that includes disrespect for authority, hyperactivity and inattention, lack of self-control, and sometimes aggression.’
      • ‘Heavy, long-term steroid use can cause irritability, hyperactivity, and aggressive and reckless behavior, the researcher said.’
      • ‘The researchers hypothesize that genetic factors affect certain aspects of central nervous system development that result in problems such as hyperactivity or impulsiveness.’
      • ‘During the daytime, a child with sleep apnoea might display severe sleepiness, irritability, and hyperactivity.’
      • ‘Findings from the few studies that have examined relations between family life factors and preschool hyperactivity are inconclusive.’
      • ‘These medicines dramatically help decrease hyperactivity and impulsivity, and increase attention for many children.’
      • ‘The children were compared for attention span, hyperactivity, and impulsivity.’
      • ‘The characteristics that a child with ADD exhibits are inattentiveness, talking excessively, hyperactivity and impulsiveness, or any combination of the three.’
      • ‘Effects of high blood lead concentrations included reductions in IQ scores, poor school performance, hyperactivity, shortened concentration spans, and behavioural problems.’
      • ‘Symptoms of physical restlessness or hyperactivity can be a part of the disorder.’

Pronunciation

hyperactivity

/ˌhʌɪpərakˈtɪvɪti/