subteen

[ suhb-teen ]
/ ˈsʌbˈtin /

noun

a young person approaching the teens or adolescence.
a range of even-numbered garment sizes, chiefly from 6 to 14, designed for girls under 13.

adjective

of, relating to, or designed for subteens: subteen clothes.

Origin of subteen

First recorded in 1950–55; sub- + teen2

British Dictionary definitions for subteen

subteen
/ (ˌsʌbˈtiːn) /

noun

US and Canadian rare a young person who has not yet become a teenager