Definition of ellipse noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ɪˈlɪps//
; NAmE NAmE//ɪˈlɪps//
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a regular oval shape, like a circle that has been squeezed on two sides Word Origin late 17th cent.: via French from Latin ellipsis, from Greek elleipsis, from elleipein ‘leave out’.
See the Oxford Advanced American Dictionary entry: ellipse