The quality or state of being calculable; the degree to which something can be determined by calculation.
From calculable plus the suffix -ness, which creates abstract nouns from adjectives. This formation is straightforward: calculable + ness = the state of being calculable.
This is a less common variant of 'calculability'—both words mean the same thing, but calculability is more frequently used in modern English, showing how language naturally gravitates toward certain word formations over others.
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