proportional

[ pruh-pawr-shuh-nl, -pohr- ]
/ prəˈpɔr ʃə nl, -ˈpoʊr- /

adjective

having due proportion; corresponding.
being in or characterized by proportion.
of, relating to, or based on proportion; relative.
Mathematics.
  1. (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.
  2. (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.

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Origin of proportional

1350–1400; Middle English proporcional<Latin prōportiōnālis.See proportion, -al1

OTHER WORDS FROM proportional

WORDS THAT MAY BE CONFUSED WITH proportional

proportional , proportionate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for proportional

British Dictionary definitions for proportional

proportional
/ (prəˈpɔːʃənəl) /

adjective

of, involving, or being in proportion
maths having or related by a constant ratio

noun

maths an unknown term in a proportionin a/b = c/x, x is the fourth proportional

Derived forms of proportional

proportionality, nounproportionally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012