- symmetry
- sym•me•try[[t]ˈsɪm ɪ tri[/t]] n. pl. -tries1) bio the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts2) the proper or due proportion of the parts of a body or whole to one another with regard to size and form; excellence of proportion3) beauty based on or characterized by such excellence of proportion4) math. a type of regularity, as of a circle or other plane figure, that is characterized by the geometric operations, as rotation or reflection, that leave a figure unchanged5) phs a property of a physical system that allows the system to remain unchanged by a specific physical or mathematical transformation, as rotation or translation•Etymology: 1535–45; < L symmetria < Gk symmetría. See sym-, -metry syn: symmetry, balance, proportion, harmony all denote qualities based on a correspondence or agreement, usu. pleasing, among the parts of a whole. symmetry implies a regularity in form and arrangement of corresponding parts: the perfect symmetry of pairs of matched columns. balance implies equilibrium of dissimilar parts, often as a means of emphasis: a balance of humor and seriousness. proportion implies a proper relation among parts: His long arms were not in proportion to his body. harmony suggests a consistent, pleasing, or orderly combination of parts: harmony of color.
From formal English to slang. 2014.