Artificial intelligent assistant

paraboloidal

paraboˈloidal, a.
  [f. as prec. + -al1.]
  Of the form of a paraboloid.

1825 J. Nicholson Operat. Mechanic 575 Circular [domes] may be spherical, spheroidal, ellipsoidal, hyperboloidal, paraboloidal, &c. 1876 G. F. Chambers Astron. 759 Using, instead of a spherical, a paraboloidal speculum.

Oxford English Dictionary

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