Definitions
1.NounA quantity of something that is part of the whole amount or number.
2.NounHarmonious relation of parts to each other or to the whole.
3.NounProper or equal share.
4.NounThe relation of one part to another or to the whole with respect to magnitude, quantity, or degree."the proportion of the parts of a building, or of the body"
5.NounA statement of equality between two ratios.
6.NounThe "rule of three", in which three terms are given to find a fourth.
7.NounSize.
8.VerbTo divide into proper shares; to apportion.
9.VerbTo form symmetrically.
10.VerbTo set or render in proportion.
11.VerbTo correspond to.