generatrix

noun gen·er·a·trix \ ˌje-nə-ˈrā-triks \

Definition of generatrix

plural generatrices play \ˌje-nə-ˈrā-trə-ˌsēz, ˌje-nə-rə-ˈtrī-(ˌ)sēz\
: a point, line, or surface whose motion generates a line, surface, or solid

First Known Use of generatrix

1840

in the meaning defined above

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