Definition of hyperactivity in English:

hyperactivity

noun

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

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

Pronunciation

hyperactivity

/ˌhʌɪpərakˈtɪvɪti/