Sexual precocity in young girls due to premature maturation of the hypotholomic-pituitary axis and development of ovaries accompanied by the secretion of ovarian hormones. SYN: true precocious puberty.
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hy·per·ova·ri·an·ism (hi″pər-o-varґe-ən-iz-əm) [hyper- + ovarian + -ism] precocious puberty in girls due to excessive and untimely ovarian secretion.Medical dictionary. 2011.