- parabolic aerial,
- parabolic antenna,
- parabolic mirror
Origin of parabola
Examples from the Web for parabola
The graph of F is a straight line; that of M is a parabola with vertical axis.
The parabola of a comet was perhaps a yet better illustration of the career of humanity.Looking Backward|Edward Bellamy
The rockets still swished upward, making their parabola of sparks and keeping the night hideous with their bursting green.Behind the Scenes in Warring Germany|Edward Lyell Fox
In fact, a parabola is merely an ellipse, with its longer axis produced to an indefinite extent.The Critique of Pure Reason|Immanuel Kant
I feel, “inside,” as children say, that my parabola will be finished before I can win to the burning heart of the man.An Ocean Tramp|William McFee
Word Origin for parabola
1570s, from Modern Latin parabola, from Greek parabole "parabola, comparison, analogy; application" (see parable), so called by Apollonius of Perga c.210 B.C.E. because it is produced by "application" of a given area to a given straight line. It had a different sense in Pythagorean geometry. Related: Parabolic.