Definify.com

Webster 1913 Edition

Noun.

[L.

aequilibritas

equal distribution. See

The state of being balanced; equality of weight.

[R.]

J. Gregory.

Noun.

[L. oequilibritas.] The state of being equally balanced; equal balance on both sides; equilibrium; as the theory of equilibrity.

equilibrity ‎(usually uncountable, plural equilibrities)

The state of being balanced; equality of weight; equilibrium.
(Can we find and add a quotation of J. Gregory to this entry?)