[ad. L. æquilībritas, f. æquilībris equally balanced, f. æquus equal + lībra balance.] The state or condition of being equally balanced; equilibrium.
1644. Digby, Nat. Bodies, xix. 168. The weight of the other side … drew it the other way, and in this manner kept it in equilibrity.
1721–1800. in Bailey.
1847. in Craig; and in mod. Dicts.
