asymmetry

noun
asym·​me·​try | \(ˈ)ā-ˈsim-ə-trē \
plural asymmetries

Medical Definition of asymmetry 

1 : lack or absence of symmetry: as

a : lack of proportion between the parts of a thing especially : want of bilateral symmetry asymmetry in the development of the two sides of the brain

b : lack of coordination of two parts acting in connection with one another asymmetry of convergence of the eyes

2 : lack of symmetry in spatial arrangement of atoms and groups in a molecule

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