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English definition of “symmetry”

symmetry

noun [U]  /ˈsɪm·ɪ·tri/ us  
geometry the quality of having parts on either side or half that match each other, esp. in an attractive way, or are the same size or shape
symmetrical
adjective  /səˈme·trɪ·kəl/ us  
geometry Many types of triangles are symmetrical.
(Definition of symmetry from the Cambridge Academic Content Dictionary © Cambridge University Press)
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