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Webster 1913 Edition

Noun.

[Perf.

im-

not +

porosity

: cf. F.

imporosité

The state or quality of being imporous; lack of porosity; compactness.

“The . . . imporosity betwixt the tangible parts.”

Bacon.

Noun.

[in and porosity.] Want of porosity; closeness of texture; compactness that excludes pores.

imporosity ‎(uncountable)

The state or quality of being imporous; lack of porosity.
The […] imporosity betwixt the tangible parts. — Francis Bacon.

state of being imporous