law of equimarginal utility
Economic principle stating that a consumer maximizes utility by allocating spending so that the marginal utility per unit of currency is equal across all goods.
The law of equimarginal utility is fundamental to the theory of consumer behavior.
Compound of 限界 (genkai, 'marginal'), 効用 (kōyō, 'utility'), 均等 (kintō, 'equality'), and 法則 (hōsoku, 'law'). A direct translation of the English economic term.