FREEZE DRYING
\fɹˈiːz dɹˈa͡ɪɪŋ], \fɹˈiːz dɹˈaɪɪŋ], \f_ɹ_ˈiː_z d_ɹ_ˈaɪ_ɪ_ŋ]\
Definitions of FREEZE DRYING
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a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes
By Princeton University