Definition of "Proportion" :

noun: harmonious arrangement or relation of parts or elements within a whole (as in a design)

noun: magnitude or extent

"A building of vast proportions."

noun: the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree

"An inordinate proportion of the book is given over to quotations."

noun: the quotient obtained when the magnitude of a part is divided by the magnitude of the whole

noun: balance among the parts of something

verb: adjust in size relative to other things

verb: give pleasant proportions to