Pas*siv"i*ty (?), n. [Cf. F.
passivité.] 1. Passiveness; --
opposed to activity. Jer. Taylor.
2. (Physics) The tendency of a body to
remain in a given state, either of motion or rest, till disturbed by
another body; inertia. Cheyne.
3. (Chem.) The quality or condition of
any substance which has no inclination to chemical activity;