nonsuperimposable

adjective
non·​su·​per·​im·​pos·​able | \ ˌnän-ˌsü-pər-im-ˈpō-zə-bəl How to pronounce nonsuperimposable (audio) \

Definition of nonsuperimposable

: not capable of being superimposed : not superimposable nonsuperimposable mirror images especially : chiral nonsuperimposable molecules

First Known Use of nonsuperimposable

1890, in the meaning defined above

Keep scrolling for more