puberty

noun

pu·​ber·​ty ˈpyü-bər-tē 

1

: the condition of being or the period of becoming first capable of reproducing sexually that is brought on by the production of sex hormones and the maturing of the reproductive organs (such as the testes and ovaries), development of secondary sex characteristics (such as male facial hair growth and female breast development), and in humans and the higher primates by the first occurrence of menstruation in the female

2

: the age at which puberty occurs often construed legally as 14 in boys and 12 in girls

Examples of puberty in a Sentence

He reached puberty later than most of his classmates.

Recent Examples on the Web

The subpoena seeks QueerDoc's personnel files, billing documents, communications with drug manufacturers and records of patients who were prescribed puberty blockers or hormone therapy, among other information, according to the 9th Circuit decision. — ABC News, 14 Aug. 2026

That number drops by about 10,000 a month before puberty and by about 1,000 a month after puberty. — Jen Christensen, CNN Money, 11 Aug. 2026

That includes puberty blockers, hormones and surgical operations, among other treatment. — Annika Kim Constantino,jacob Pramuk, CNBC, 11 Aug. 2026

From bone density and muscle mass to heart size and lung capacity, male puberty confers undeniable physical advantages that training alone can never bridge. — Alejandro Avila Outkick, FOXNews.com, 4 Aug. 2026

Word History

Etymology

Middle English puberte, borrowed from Middle French & Latin; Middle French puberté, borrowed from Latin pūbertāt-, pūbertās "age of physical maturity, physical signs of puberty," from pūber-, pūbēs "physically mature, adult" (derivative from the base of pūbēs, genitive pūbis "adult population, age of puberty, pubic region, pubic hair") + -tāt-, -tās -ty — more at pubes

First Known Use

14th century, in the meaning defined at sense 1

Kids Definition

puberty

noun

pu·​ber·​ty pyü-bərt-ē 

1

: the condition of being or the period of becoming first capable of reproducing sexually that is brought on by the production of sex hormones and the maturing of the sex organs (as the testes and ovaries) and is marked by the development of secondary sex characteristics (as male facial hair growth and female breast development) and by the occurrence of the first menstruation in the female

2

: the age at which puberty occurs often defined legally as 14 in boys and 12 in girls

Medical Definition

puberty

noun

pu·​ber·​ty ˈpyü-bərt-ē 

plural puberties

1

: the condition of being or the period of becoming first capable of reproducing sexually marked by maturing of the genital organs, development of secondary sex characteristics, and in humans and the higher primates by the first occurrence of menstruation in the female

2

: the age at which puberty occurs being typically between 13 and 16 years in boys and 11 and 14 in girls and often construed legally as 14 in boys and 12 in girls