Source : Webster's Revised Unabridged Dictionary (1913)

Spheroidal \Sphe*roid"al\, a. [Cf. F. sph['e]ro["i]dal.]
   Having the form of a spheroid. -- {Sphe*roid"al*ly}, adv.

   {Spheroidal state} (Physics.), the state of a liquid, as
      water, when, on being thrown on a surface of highly heated
      metal, it rolls about in spheroidal drops or masses, at a
      temperature several degrees below ebullition, and without
      actual contact with the heated surface, -- a phenomenon
      due to the repulsive force of heat, the intervention of a
      cushion of nonconducting vapor, and the cooling effect of
      evaporation.