symmetry

noun sym·me·try \ ˈsi-mə-trē \

Definition of symmetry

plural symmetries
1 :balanced proportions; also :beauty of form arising from balanced proportions
2 :the property of being symmetrical; especially :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 — compare bilateral symmetry, radial symmetry
3 :a rigid motion of a geometric figure that determines a one-to-one mapping onto itself
4 :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

Examples of symmetry in a Sentence

  1. the symmetry of the human body

  2. The building has perfect symmetry.

Recent Examples of symmetry from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'symmetry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of symmetry

Latin symmetria, from Greek, from symmetros symmetrical, from syn- + metron measure — more at measure

Other Mathematics and Statistics Terms


SYMMETRY Defined for English Language Learners

symmetry

noun

Definition of symmetry for English Language Learners

  • : the quality of something that has two sides or halves that are the same or very close in size, shape, and position : the quality of having symmetrical parts


SYMMETRY Defined for Kids

symmetry

noun sym·me·try \ ˈsi-mə-trē \

Definition of symmetry for Students

plural symmetries
:close agreement in size, shape, and position of parts that are on opposite sides of a dividing line or center :an arrangement involving regular and balanced proportions
  • the symmetry of the human body

Medical Dictionary

symmetry

noun sym·me·try \ ˈsim-ə-trē \

medical Definition of symmetry

plural symmetries
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


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