To throw something out of balance or destroy its equilibrium.
From prefix dis- (reverse, undo) plus equilibrate (to bring into balance), which comes from Latin 'aequus' (equal) and 'librare' (to balance). The term emerged in scientific writing around the 1800s.
Chemists and physicists use this when a stable system gets disrupted—like adding heat to a balanced chemical reaction. It's the opposite of what nature wants; systems naturally try to rebalance themselves after being disequilibrated.
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