Both Uses

ration
in
Among the Hidden
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"Some shadow children do because they don't have food ration cards, and the rest of their family doesn't share," she said, opening a refrigerator that was bigger than every appliance in the Garners' kitchen put together.†
p. 79.9
In Luke's country, the Government began rationing food, only allowing people to have 1,500 calories a day.†
p. 92.4 *

rationing = restricting the amount of something each person can have -- such as food or gasoline when there is a shortage

Definitions:

(1) (ration)
a fixed share of something, especially scarce goods like food or fuel; or to limit and distribute something in fixed shares
(2) (meaning too rare to warrant focus)