Source : Webster's Revised Unabridged Dictionary (1913)

Parabolism \Pa*rab"o*lism\ (p[.a]*r[a^]b"[-o]*l[i^]z'm), n.
   [From {Parabola}.] (Alg.)
   The division of the terms of an equation by a known quantity
   that is involved in the first term. [Obs.]