■ noun spontaneous hardening of a metal which occurs if it is quenched and then stored at ambient temperature or treated with mild heat.
Derivatives
age-hardened adjective
■ noun spontaneous hardening of a metal which occurs if it is quenched and then stored at ambient temperature or treated with mild heat.
Derivatives
age-hardened adjective
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004