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English definition of “symmetry”

symmetry

noun [U] uk   /ˈsɪm.ə.tri/ us  
the quality of having parts that match each other, especially in a way that is attractive, or similarity of shape or contents: The design of the house had a pleasing symmetry, its oblong shape being picked up in its elongated windows. specialized mathematics in mathematics, the quality of having two parts that match exactly, either when one half is like an image of the other half in a mirror, or when one part can take the place of another if it is turned 90° or 180°
symmetrical
adjective uk   /sɪˈmet.rɪ.kəl/ (also symmetric) us  
symmetrically
adverb uk   /sɪˈmet.rɪ.kəl.i/ us  
(Definition of symmetry from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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