frit
Concise Oxford English Dictionary © 2008 Oxford University Press:
frit/frɪt/
▶noun a mixture of silica and fluxes which is fused at high temperature to make glass.
■ a similar calcined and pulverized mixture used to make soft-paste porcelain or ceramic glazes.
▶verb (frits, fritting, fritted) make into frit.– origin C17: from Ital. fritta, fem. past part. of friggere ‘to fry’.
'frit' also found in these Oxford entries:

