Vitrification
nounPronunciation: /vɪˌtrɪfɪˈkeɪʃən/
The transition of cellular cytoplasm to a glass-like, non-crystalline solid state during extreme dehydration or freezing stress, where molecular motion effectively ceases. This protective mechanism prevents ice crystal formation that would damage cellular structures.
Plain English
Cells turn into a glass-like solid without forming ice crystals when extremely stressed by cold or drought.
Etymology & History
Usage
"Vitrification of cellular contents in tardigrades allows survival at temperatures near absolute zero."
Style guide notes: Use 'vitrification' when describing glass-like state formation; distinguish from simple dehydration.
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Related Terms
Frequently Asked Questions
How does vitrification protect cells from freezing damage?
By preventing ice crystal formation that would rupture cell membranes and organelles during extreme cold stress.
Which organisms use vitrification as a survival strategy?
Tardigrades, certain insects, and some plant seeds employ vitrification for extreme stress tolerance.
Why Test Candidates on This?
Vitrification is tested in plant physiology and extremophile organism studies for extreme stress adaptation.
Required skill level: Senior