n. See under Proportional, etc.adj. Having a due proportion, or comparative relation; being in suitable proportion or degree.adj. Relating to, or securing, proportion.adj. Constituting a proportion; having the same, or a constant, ratio.adj. instruments used in making copies of drawings, or drawings of objects, on an enlarged or reduced scale.n. Any number or quantity in a proportion.n. The combining weight or equivalent of an element.