n. The act of apportioning; a dividing into portions or shares; a dividing and assigning of a just and equitable portion to each person interested or entitled to participate in any claim, right, property, or charge.n. In the United States: The distribution of representation in the federal House of Representatives, and in the houses of the different State legislatures.n. The allotment of direct taxes on the basis of population: a Congressional power rarely exercised.