freeze-drying

Từ điển WordNet v3.1 - WordNet Dictionary

noun

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
• Syn:
lyophilization, lyophilisation
• Derivationally related forms:
lyophilise (for: lyophilisation), lyophilize (for: lyophilization)
• Hypernyms:
freeze, freezing, dehydration, desiccation, drying up, evaporation