# symmetrical

### or sym·met·ric

[si-me-tri-kuhl 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 for symmetrical

See more synonyms for on Thesaurus.comDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Related Words for unsymmetrical

lumpy, asymmetrical, elliptical, jagged, craggy, unbalanced, top-heavy, uneven, unequal, irregular, unstable, wobbly, lopsided, unsteady, inequitable, one-sided, disproportionate, patchy, bumpy, rough## Examples from the Web for unsymmetrical

### Historical Examples of unsymmetrical

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