Another round of winter weather moves into the South Associated Press; The 38 most amazing photos of this week's weather
proportional - one of the quantities in a mathematical proportion. quantity - the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable. proportion - the quotient obtained when the magnitude of a part is divided by the magnitude of the whole.
Definition of proportion for English Language Learners. : 1  an amount that is a part of a whole. : 2  the relationship that exists between the size, number, or amount of two things. : 3  the correct or appropriate relationship between the size, shape, and position of the different parts of something.