Vitreous clay is a kind of clay that has been fired to maturity, so that it is hard, dense and nonabsorbent.
Ref: 122651/2006-10-11

Other Database Pages Exist for this Phrase:
Clay (Clay is characterized as: 1) Fine-grained ...)
Vitreous (Vitreous refers to a surface material on some ...)

Alternative Spellings (Synonyms): Clays

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