ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ transitive verb
: to harden (a ferrous alloy) by heating above the transformation temperature and then cooling as rapidly as necessary
ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ transitive verb
: to harden (a ferrous alloy) by heating above the transformation temperature and then cooling as rapidly as necessary
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012