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.
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.
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.
They differ from the barnacles in having a symmetrical shell, and being destitute of a flexible stalk.
The New Gresham Encyclopedia. Vol. 1 Part 3|Various
The semblance of balance is marked, also, in those stripes which are not symmetrical.
Chincha Plain-weave cloths|Lila M. O'Neale
It is an irregularly cylindrical structure, divided into two lateral, symmetrical halves by fissures.
Special Report on Diseases of the Horse|United States Department of Agriculture
The upper part is not symmetrical, but no new decorative element is introduced.
Archeological Expedition to Arizona in 1895|Jesse Walter Fewkes
British Dictionary definitions for symmetrical
symmetrical
/ (sɪˈmɛtrɪkəl) /
adjective
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