EQUILIBRITY
E`qui*lib"ri*ty, n. Etym: [L. aequilibritas equal distribution. See
Equilibrium.]
Defn: The state of being balanced; equality of weight. [R.] J.
Gregory.
EQUILIBRIUM E`qui*lib"ri*um, n.; pl. E. Equilibriums, L. Equilibria. Etym: [L. aequilibrium, fr. aequilibris in equilibrium, level; aequus equal + libra balance. See Equal, and Librate.]
1. Equality of weight or force; an equipoise or a state of rest produced by the mutual counteraction of two or more forces.
2. A level position; a just poise or balance in respect to an object, so that it remains firm; equipoise; as, to preserve the equilibrium of the body. Health consists in the equilibrium between those two powers. Arbuthnot.
3. A balancing of the mind between motives or reasons, with consequent indecision and doubt. Equilibrium valve (Steam Engine), a balanced valve. See under Valve.
EQUIMOMENTAL
E`qui*mo*men"tal, a. Etym: [Equi- + momental.] (Mech.)
Defn: Having equal moments of inertia.
Note: Two bodies or systems of bodies are said to be equimomental when their moments of inertia about all straight lines are equal each to each. Equimomental cone of a given rigid body, a conical surface that has any given vertex, and is described by a straight line which moves in such manner that the moment of inertia of the given rigid body about the line is in all its positions the same.
EQUIMULTIPLE
E`qui*mul"ti*ple, a. Etym: [Equi- + multiple: cf. F. équimultiple.]