Equilibrium
来自Big Physics
early 17th century (in the sense ‘well-balanced state of mind’): from Latin aequilibrium, from aequi- ‘equal’ + libra ‘balance’.
wiktionary
From Latin aequilībrium, from equal + lībra(“balance”). [1]
etymonline
equilibrium (n.)
c. 1600, "state of mental balance," from Latin aequilibrium "an even balance; a horizontal position," from aequilibris "equal, level, horizontal, evenly balanced," from aequus "equal" (see equal (adj.)) + libra "a balance, pair of scales, plummet" (see Libra). Related: Equilibrious.
