parabola : Idioms & Phrases
Cubical parabola
(Geom.) , two curves of the third degree, one plane, and one on space of three dimensions.
Webster 1913
Helicoid parabola
(Math.) , the parabolic spiral.
Webster 1913
Semicubical parabola
- a curve in which the ordinates are proportional to the square roots of the cubes of the abscissas.