equilibrium is defined when
equilibrium noun [U]. âº a âstate of âbalance: He âdevised a mathematical âmethod to âprove the âexistence of equilibrium among âprices, âproduction, and âconsumer âdemand. âº biology Equilibrium is also the âstate of âbalance âmaintained by the âvarious âorganisms that âlive in a âparticular âenvironment. âº physics Equilibrium also âmeans a âstate of âbalance between âopposing âforces. âº Equilibrium is also a âstate of âmental âcalm.