查询结果:

n. (食品短缺时)配给的东西,配给量  
vt. 配给,定量供应  

拆分: -rat-计算,思考 + -ion名词词尾      

例:
During the war, everyone had a ration of butter. 战争期间每人的黄油配给量是定量的。
Tea was scarce and was rationed. 茶叶稀少,得定量供应。