He reached the height of the 'parabola,' and is now about to descend.
Is the orbit that of an ellipse, or a circle, or a parabola?
You will remember that a Republican State is represented by a parabola.
Its actual path will be a curve, which in this case is a parabola.
As a matter of fact the path of a projectile in vacuo is only approximately a parabola.
The parabola of a comet was perhaps a yet better illustration of the career of humanity.
The vertex of the parabola is at the level of the greatest velocity.
The resulting diagram is a curve which is approximately a parabola.
A heavy silver match-box was tossed in a parabola through the air.
If the air-resistance be neglected, it can be shown that the trajectory is a 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.