Closed+conic
111ellipse — [e lips′, ilips′] n. pl. ellipses [e lip′sēz΄, i lip′sēz΄] [ModL ellipsis < Gr elleipsis, a defect, ellipse < elleipein, to fall short < en , in + leipein, to leave (see LOAN): so named from falling short of a perfect circle] Geom. the… …
