ˌædəˈlɛsənt ˌædəˈlɛsənt ˈstɹɪplɪŋ ˈtiːneɪd͡ʒ ˈtiːnˌeɪ.dʒə(ɹ) being of the age 13 through 19 teenage mothers the teen years a juvenile between the onset of puberty and maturity