消しょう費ひ関かん数すうしょうひかんすうMeanings1nounconsumption functionEconomics term for the relationship between total consumption and gross national income, often expressed as C = a + bY.ケインズ経けい済ざい学がくでは、消しょう費ひ関かん数すうは重じゅう要ような概がい念ねん