Ē'qua-bil'ity, n.

noun

n. [Lat. æquabilitas, from æquabilis; It. equabilità. See infra.] The quality or condition of being equable; continued equality; evenness or uniformity; as, the equability of the temperature of the air; the equability of the mind.

For the celestial bodies, the equability and constancy of their motions argue them ordained by wisdom. Ray.