EQUABIL'ITY, noun [See Equable.] Equality in motion; continued equality, at all times, in velocity or movement; uniformity; as the equability of the motion of a heavenly body, or of the blood in the arteries and veins. 1. Continued equality; evenness or uniformity; as the equability of the temperature of the air; the equability of the mind.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI