This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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• Wordscraper
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n. The state of being circular.

n. A circular object, form or argument.

n. The quality or state of being circular; a circular form.

n. The state or quality of being circular; a circular form or space: as, “the circularity of the heavens,”

n. the roundness of a 2-dimensional figure

"There is, incidentally, a certain circularity to this kind of argument — not in any discrete case, but as a general account of people’s behavior."

roundness   

concentricity    eccentricity   

sphericity    footnote    letterpress    notes    reductionism    proem    distributional    rhythmicity    rotundity    wouldkeep