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Webster 1913 Edition

Pisophalt

Pis′o-phalt

,
Noun.
[For
pissasphalt
.]
(Min.)
Pissasphalt.
[Obs.]

Webster 1828 Edition

Pisophalt

PIS'OPHALT

,
Noun.
Pea-mineral or mineral-pea; a soft bitumen, black and of a strong pungent smell. It appears to be petrol passing to asphalt. It holds a middle place between petrol, which is liquid,and asphalt, which is dry and brittle.

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