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Definitions of overactive
  1. adjective
    more active than normal

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Definition that contains overactive
  • thyrotoxicosis an overactive thyroid gland; pathologically excessive production of thyroid hormones or the condition resulting from excessive production of thyroid hormones
  • hyperthyroidism an overactive thyroid gland; pathologically excessive production of thyroid hormones or the condition resulting from excessive production of thyroid hormones
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