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Webster 1913 Edition

Thickening

Thick′en-ing

,

Noun.

Something put into a liquid or mass to make it thicker.

Webster 1828 Edition

Thickening

THICK'ENING

,

ppr.

Making dense or more dense, more close, or more frequent; inspissating.

THICK'ENING

,

Noun.

Something put into a liquid or mass to make it more thick.