The abstract quality of being crushable; the degree to which something can be crushed.
From crushable plus -ness, a suffix that creates abstract nouns from adjectives. This is a formal way to nominate the concept of crushability.
You'd rarely hear 'crushableness' in everyday speech—'crushability' is the modern term engineers use—but old technical papers sometimes used the -ness version because they thought it sounded more scholarly.
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