nonspherical

adjective
non·​spher·​i·​cal | \ ˌnän-ˈsfir-i-kəl How to pronounce nonspherical (audio) , -ˈsfer-\

Definition of nonspherical

: not having the form of a sphere or of one of its segments : not spherical an irregular, nonspherical mass nonspherical mirrors

First Known Use of nonspherical

1845, in the meaning defined above

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The first known use of nonspherical was in 1845

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