# symmetry

[ sim-i-tree ]

/ ˈsɪm ɪ tri /

### noun, plural sym·me·tries.

the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.

the proper or due proportion of the parts of a body or whole to one another with regard to size and form; excellence of proportion.

beauty based on or characterized by such excellence of proportion.

Mathematics.

- a geometrical or other regularity that is possessed by a mathematical object and is characterized by the operations that leave the object invariant: A circle has rotational symmetry and reflection symmetry.
- a rotation or translation of a plane figure that leaves the figure unchanged although its position may be altered.

Physics. a property of a physical system that is unaffected by certain mathematical transformations as, for example, the work done by gravity on an object, which is not affected by any change in the position from which the potential energy of the object is measured.

## QUIZZES

#### BEAT THE DOLDRUMS WITH THIS WORD OF THE DAY QUIZ!

We know you’ll tackle this quiz totis viribus! See how many words from the week of Oct 12–18, 2020 you get right!

Question 1 of 7

What does “Indigenous” mean?

## Origin of symmetry

## SYNONYMS FOR symmetry

## synonym study for symmetry

1. Symmetry, balance, proportion, harmony are terms used, particularly in the arts, to denote qualities based upon a correspondence or agreement, usually pleasing, among the parts of a whole. Symmetry implies either a quantitative equality of parts ( the perfect symmetry of pairs of matched columns ) or a unified system of subordinate parts: the symmetry of a well-ordered musical composition. Balance implies equality of parts, often as a means of emphasis: Balance in sentences may emphasize the contrast in ideas. Proportion depends less upon equality of parts than upon that agreement among them that is determined by their relation to a whole: The dimensions of the room gave a feeling of right proportion. Harmony, a technical term in music, may also suggest the pleasing quality that arises from a just ordering of parts in other forms of artistic composition: harmony of line, color, mass, phrase, ideas.

## OTHER WORDS FROM symmetry

an·ti·sym·me·try, adjective, nounnon·sym·me·try, noun, plural non·sym·me·tries.## Words nearby symmetry

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

## Example sentences from the Web for symmetry

## British Dictionary definitions for symmetry

symmetry

/ (ˈsɪmɪtrɪ) /

### noun plural -tries

similarity, correspondence, or balance among systems or parts of a system

maths an exact correspondence in position or form about a given point, line, or planeSee symmetrical (def. 2)

beauty or harmony of form based on a proportionate arrangement of parts

physics the independence of a property with respect to direction; isotropy

## Word Origin for symmetry

C16: from Latin symmetria, from Greek summetria proportion, from syn- + metron measure

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

## Medical definitions for symmetry

symmetry

[ sĭm′ĭ-trē ]

### n.

Exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

## Scientific definitions for symmetry

symmetry

[ sĭm′ĭ-trē ]

An exact matching of form and arrangement of parts on opposite sides of a boundary, such as a plane or line, or around a central point or axis.

Physics See invariance.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

## Cultural definitions for symmetry

symmetry

In geometry, the equivalence, point for point, of a figure on opposite sides of a point, line, or plane.

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.