Noah Webster
Ellipsoid
ELLIPS'OID, noun [ellipsis and Gr. form.] In conics, a solid or figure formed by the revolution of an ellipse about its axis; an elliptic conoid; a spheroid.
ELLIPS'OID, noun [ellipsis and Gr. form.] In conics, a solid or figure formed by the revolution of an ellipse about its axis; an elliptic conoid; a spheroid.