[ freez-drahy-ing ]
/ ˈfrizˈdraɪ ɪŋ /


a process for drying heat-sensitive substances, as foods, blood plasma, antibiotics, and the like, by freezing the substance and then subliming the ice or other frozen solvent in a high vacuum.

Nearby words

  1. freeze frame,
  2. freeze one's blood,
  3. freeze out,
  4. freeze-dried,
  5. freeze-dry,
  6. freeze-etch,
  7. freeze-fracture,
  8. freeze-frame,
  9. freeze-up,
  10. freezeout

Origin of freeze-drying

First recorded in 1940–45


[ freez-drahy ]
/ ˈfrizˈdraɪ /

verb (used with object), freeze-dried, freeze-dry·ing.

to subject to freeze-drying.

Origin of freeze-dry

First recorded in 1945–50 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for freeze-drying


verb -dries, -drying or -dried

(tr) to preserve (a substance) by rapid freezing and subsequently drying in a vacuum
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for freeze-drying




The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for freeze-drying


To preserve a substance, such as food, by freezing it rapidly and placing it in a vacuum chamber, where the water frozen in the substance evaporates through sublimation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.