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puberty

pu·ber·ty

/ˈpyo͞obərdē/

Noun

A period in adolescence when humans reach sexual maturity and become capable of reproduction initiated by hormonal signals from the brain to the gonads. The hormone estrocgen causes the glands to enlarge and additional fat to deposit within the breast in females, and the hormone testosterone causes enlargement of the testes in males. Other physical changes also occur.