freeze-drying

[freez-drahy-ing]
noun
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.

Origin:
1940–45

Dictionary.com Unabridged

freeze-dry

[freez-drahy]
verb (used with object), freeze-dried, freeze-drying.
to subject to freeze-drying.

Origin:
1945–50

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
freeze-dry
 
vb , -dries, -drying, -dried
(tr) to preserve (a substance) by rapid freezing and subsequently drying in a vacuum

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

freeze-drying n.
See lyophilization.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
freeze-dry  
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Sub-Zero is here, for instance, freeze-drying opponents.
The freeze-drying process removes more moisture than dehydration.
The results from thermal vacuum freeze-drying, however, provided a useful sampling for comparison with other methods evaluated.
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