† Elliptoides

Obs. Also 8 elliptoide. [Badly f. ellipt- (cf. ELLIPTIC) + mod.L. -oides: see -OID.] An infinite ellipse.

1731.  Bailey, Eliptoides.

1796.  Hutton, Math. Dict., Elliptoide, an infinite or indefinite Ellipsis, defined by the indefinite equation ay^m+n=bx^m . a–xⁿ when m or n are greater than 1.