# symmetrical

[ si-me-tri-kuhl ]
See synonyms for: symmetricalsymmetrically on Thesaurus.com

1. characterized by or exhibiting symmetry; well-proportioned, as a body or whole; regular in form or arrangement of corresponding parts.

2. 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.

1. Usually 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.

2. 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.

3. 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.

4. affecting corresponding parts simultaneously, as certain diseases.

## Origin of symmetrical

1
First recorded in 1745–55; symmetr(y) + -ical
• Also sym·met·ric [si-me-trik] /sɪˈmɛ trɪk/ .

## Other words from symmetrical

• sym·met·ri·cal·ness, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

## How to use symmetrical in a sentence

• The suspension chains are constructed in the form of braced girders, so that they are stiff against unsymmetrical loading.

• "I think he must have wound them himself," remarked Louise, shaking her head over the lumpy, unsymmetrical ball she held.

The Story of the Big Front Door | Mary Finley Leonard
• Under his coat was partially concealed some bulging object which gave him an appearance singularly unsymmetrical.

Peggy Raymond's Vacation | Harriet L. (Harriet Lummis) Smith
• A portion of the screen has been broken off and the otherwise unsymmetrical form of the drawing is due to photographic distortion.

• It is unsymmetrical, and a much larger number of its cells are found collected at one end than at the other.

## British Dictionary definitions for symmetrical

symmetrical

/ (sɪˈmɛtrɪkəl) /

1. possessing or displaying symmetry: Compare asymmetric

2. 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 plane: the 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 plane: a 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 variables: x + y = z is a symmetrical equation

1. chem (of a compound) having a molecular structure in which substituents are symmetrical about the molecule

2. botany another word for isomerous

3. Also: symmetric (of a disease, infection, etc) affecting both sides of the body or corresponding parts, such as both legs