OXFORD DICTIONARY
Frit, n. & v.
--n.
1 a calcined mixture of sand and fluxes as material for glass-making.
2 a vitreous composition from which soft porcelain, enamel, etc., are made.
--v.tr. (fritted, fritting) make into frit, partially fuse, calcine.
It. fritta fem. past part. of friggere FRY(1)
ROGET THESAURUS
Frit
Sponge
N
sponge, honeycomb, network, frit, filter, sieve, net, screen (opening), cellular, spongy, spongious, honeycombed, alveolar, sintered, porous (opening).