symmetry

Symmetry is an attribute where something is the same on both sides of an axis.

(noun)

An example of symmetry is a circle that is the same on both sides if you fold it along its diameter.

See symmetry in Webster's New World College Dictionary

similarity of form or arrangement on either side of a dividing line or plane; correspondence of opposite parts in size, shape, and position; condition of being symmetrical: the whole or the corresponding parts are said to have symmetry
balance or beauty of form or proportion resulting from such correspondence

Origin: < MFr or L: MFr symmetrie (now symétrie) < L symmetria < Gr < symmetros, measured together < syn-, together + metron, a measure

See symmetry in American Heritage Dictionary 4

noun pl. sym·me·tries

Exact correspondence of form and constituent configuration on opposite sides of a dividing line or plane or about a center or an axis. See Synonyms at proportion.
A relationship of characteristic correspondence, equivalence, or identity among constituents of an entity or between different entities: the narrative symmetry of the novel.
Beauty as a result of balance or harmonious arrangement.

Origin:

Origin: Latin symmetria

Origin: , from Greek summetriā

Origin: , from summetros, of like measure

Origin: : sun-, syn-

Origin: + metron, measure; see mē-² in Indo-European roots

See symmetry in Ologies

Symmetry