(in a kiln) a triangular piece of material that indicates by bending or melting that a certain temperature has been reached.
[ 1945-50 ]
(in a kiln) a triangular piece of material that indicates by bending or melting that a certain temperature has been reached.
[ 1945-50 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012