parabolic
adjective
[ ˌparəˈbɒlɪk ]
• of or like a parabola or part of one.
• "a parabolic mirror behind a spotlight projects a parallel beam"
• of or expressed in parables.
• "parabolic teaching"
Origin:
late Middle English: via late Latin from Greek parabolikos, from parabolē ‘application’ (see parabola).
