bilateral symmetry
biˌlateral ˈsymmetryBrE 
NAmE 
noun [uncountable]the fact of the two halves of sth on either side of a particular line being exactly the same
biˌlateral ˈsymmetryBrE NAmE noun [uncountable]the fact of the two halves of sth on either side of a particular line being exactly the same
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