Read the dictionary definition of ration. All definitions for this word.
1. the food allowance for one day (especially for service personnel)
1. the rations should be nutritionally balanced
2. a fixed portion that is allotted (especially in times of scarcity)
3. distribute in rations, as in the army
1. Cigarettes are rationed
4. restrict the consumption of a relatively scarce commodity, as during war
1. Bread was rationed during the siege of the city