parabolic adjective 3noun 1forms 3 adjective3 •Of, or pertaining to, or in the shape of a parabola or paraboloid. •Of a leaf: ovate-oblong or ovate, obtuse and contracted below the apex. •(rhetoric) Of or pertaining to a parable. noun1 •A parabolic function, equation etc. formsparabolics · more parabolic · most parabolic