nonsymmetrical

adjective

non·​sym·​met·​ri·​cal ˌnän-sə-ˈme-tri-kəl 

variants or nonsymmetric

ˌnän-sə-ˈme-trik 

: not symmetrical : not characterized by symmetry : asymmetrical, unsymmetrical

a nonsymmetrical pattern

a deer with nonsymmetric antlers

The mass of the Moon is distributed in a nonsymmetrical manner, with the center of mass lying 1.8 km closer to the Earth than the geometrical center of figure.

—Stuart Ross Taylor

Word History

First Known Use

1843, in the meaning defined above