definitions

# proportion

[pruh-pawr-shuhn, -pohr-]

### verb (used with object)

to adjust in proper proportion or relation, as to size, quantity, etc.
to balance or harmonize the proportions of.

## Origin of proportion

1350–1400; Middle English proporcio(u)n < Latin prōportiōn- (stem of prōportiō) symmetry, analogy. See pro-1, portion

SYNONYMS FOR proportion
1. comparison. 5. share. 6. distribution, arrangement. See symmetry. 10. regulate, arrange, balance, harmonize.

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## Examples from the Web for proportion

British Dictionary definitions for proportion

## proportion

### noun

the relationship between different things or parts with respect to comparative size, number, or degree; relative magnitude or extent; ratio
the correct or desirable relationship between parts of a whole; balance or symmetry
a part considered with respect to the whole
(plural) dimensions or sizea building of vast proportions
a share, part, or quota
maths a relationship that maintains a constant ratio between two variable quantitiesx increases in direct proportion to y
maths a relationship between four numbers or quantities in which the ratio of the first pair equals the ratio of the second pair

### verb (tr)

to adjust in relative amount, size, etc
to cause to be harmonious in relationship of parts

## Word Origin for proportion

C14: from Latin prōportiō (a translation of Greek analogia), from phrase prō portione, literally: for (its, his, one's) portion

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

Word Origin and History for proportion
Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for proportion

## proportion

[prə-pôrshən]
A statement of equality between two ratios. Four quantities, a, b, c, and d, are said to be in proportion if ab = cd.