adjective 1.having due proportion; corresponding.
2.being in or characterized by proportion.
3.of, pertaining to, or based on proportion; relative.
4.Mathematics.a.(of two quantities) having the same or a constant ratio or relation: The quantities y and x are proportional if y/x = k, where k is the constant of proportionality.
b.(of a first quantity with respect to a second quantity) a constant multiple of: The quantity y is proportional to x if y = kx, where k is the constant of proportionality.
Origin: 1350–1400; Middle English proporcional <
Latin prōportiōnālis. See
proportion,
-al^{1} Related forms proportionality, noun
proportionally, adverb
interproportional, adjective
nonproportional, adjective
nonproportionally, adverb
subproportional, adjective
subproportionally, adverb
unproportional, adjective
unproportionally, adverb
Synonyms
1. harmonious, comparative, accordant, consonant, proportionate.