# symmetrical

### or sym·met·ric

[si-me-tri-kuh l or si-me-trik]

- characterized by or exhibiting symmetry; well-proportioned, as a body or whole; regular in form or arrangement of corresponding parts.
- Geometry.
- noting two points in a plane such that the line segment joining the points is bisected by an axis: Points (1, 1) and (1, −1) are symmetrical with respect to the x-axis.
- noting a set consisting of pairs of points having this relation with respect to the same axis.
- noting two points in a plane such that the line segment joining the points is bisected by a point or center: The points (1, 1) and (−1, −1) are symmetrical with respect to (0, 0).
- noting a set consisting of pairs of points having this relation with respect to the same center.

- Often symmetric. Mathematics.
- noting a square matrix that is equal to its transpose.
- noting a dyad or dyadic that is equal to its conjugate.
- noting a relation in which one element in relation to a second implies the second in relation to the first.

- Botany.
- divisible into two similar parts by more than one plane passing through the center; actinomorphic.
- (of a flower) having the same number of parts in each whorl.

- Chemistry.
- having a structure that exhibits a regular repeated pattern of the component parts.
- noting a benzene derivative in which three substitutions have occurred at alternate carbon atoms.

- affecting corresponding parts simultaneously, as certain diseases.

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## Origin of symmetrical^{}

## Synonyms

See more synonyms for symmetrical on Thesaurus.com1. balanced, orderly, regular, congruent.

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for unsymmetrical

### Historical Examples

#### When leaves are unsymmetrical, like the begonias, the pattern is unsymmetrical also.

Colouration in Animals and PlantsAlfred Tylor

#### We have learnt to write "asymmetry," but not to avoid "unsymmetrical."

#### Unsymmetrical, that is, when the circles of the flower or some of them differ in the number of their members.

The Elements of BotanyAsa Gray

#### The increase in goods of different kinds is, of course, unsymmetrical.

Essentials of Economic TheoryJohn Bates Clark

#### Thirteenth century and unsymmetrical—you must remember that.

Seeing France with Uncle JohnAnne Warner

## symmetrical

- possessing or displaying symmetryCompare asymmetric
- maths
- (of two points) capable of being joined by a line that is bisected by a given point or bisected perpendicularly by a given line or planethe points ( x, y ) and ( –x, –y ) are symmetrical about the origin
- (of a configuration) having pairs of points that are symmetrical about a given point, line, or planea circle is symmetrical about a diameter
- (of an equation or function of two or more variables) remaining unchanged in form after an interchange of two variablesx + y = z is a symmetrical equation

- chem (of a compound) having a molecular structure in which substituents are symmetrical about the molecule
- botany another word for isomerous
- Also: symmetric (of a disease, infection, etc) affecting both sides of the body or corresponding parts, such as both legs

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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 unsymmetrical

## symmetrical

Online Etymology Dictionary, © 2010 Douglas Harper