characterized by or exhibiting symmetry; well-proportioned, as a body or whole; regular in form or arrangement of corresponding parts.
2. Geometry. a.
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.
3. Often, symmetric. Mathematics. a.
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.
4. Botany. a.
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.
5. Chemistry. a.
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.
1. balanced, orderly, regular, congruent.