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Bisc: A general term for used to
describe a prelominary firing of unglazed
Biscuit firing: A preliminary firing of
unglazed ware beyond the point of
ceramic change, but below the point of
fusion, so that the ware remains
porous. Biscuit may refer to finished
unglazed wares, despite the fact that
these may be fired to vitrification.
Bisque: Generally refers to unglazed
ware fired to maturation (and in some
cases, to vitrification)before the
application of a glaze whose maturing
temperature is lower than that of the