parabolical

a.

  1. Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction.
  2. Having the form or nature of a parabola; pertaining to, or resembling, a parabola; as, a parabolic curve.
  3. Generated by the revolution of a parabola, or by a line that moves on a parabola as a directing curve; as, a parabolic conoid.