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# Definition of: INCOMMENSURABLE

- incommensurable
- (a.) Not commensurable; having no common measure or standard of comparison; as, quantities are incommensurable when no third quantity can be found that is an aliquot part of both; the side and diagonal of a square are incommensurable with each other; the diameter and circumference of a circle are incommensurable.
- (n.) One of two or more quantities which have no common measure.