Main Entry: sym·me·try

Pronunciation: \ˈsim-ə-trē\

Function: noun

Inflected Form(s): plural sym·me·tries

1 : correspondence in size, shape, and relative position of parts on opposite sides of a dividing line or median plane or about a center or axis—see bilateral symmetry, radial symmetry
2 : the property of remaining invariant under certain changes (as of orientation in space, of the sign of the electric charge, of parity, or of the direction of time flow)—used of physical phenomena and of equations describing them