The quality of being slender, thin, or delicate in form or structure.
From Latin 'gracilitas', derived from 'gracilis' (slender). The suffix '-ity' (from Latin '-itas') creates abstract nouns, common in English scientific and philosophical vocabulary.
The '-ity' suffix is why we have so many abstract nouns in English—'gracile' becomes 'gracility,' 'noble' becomes 'nobility,' 'solid' becomes 'solidity.' It's borrowed directly from Latin science!
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