The quality or state of being gelatinous; the gel-like or sticky texture or consistency of something.
From gelatinous plus -ness (suffix forming abstract nouns). Gelatinous derives from gelatin, with the -ous suffix meaning 'full of' or 'characterized by.'
The gelatinousness of egg whites actually changes dramatically when you cook them—the proteins unfold and bond together, transforming from runny and clear to solid and white, which is why cooking is basically applied chemistry!
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