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Meaning of cryoscopy

cry•os•co•py

Pronunciation: (krī-os'ku-pē), [key]
— pl. -pies.
  1. a technique for determining the molecular weight of a substance by dissolving it and measuring the freezing point of the solution.
  2. the determination of the freezing points of certain bodily fluids, as urine, for diagnosis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.