Definify.com
Webster 1913 Edition
Parabolical
{
Parˊa-bol′ic
,Parˊa-bol′ic-al
, }Adj.
1.
Of the nature of a parable; expressed by a parable or figure; allegorical;
as,
. parabolical
instructionParabolic conoid
, a paraboloid; a conoid whose directing curve is a parabola. See
– Conoid
. Parabolic mirror
(Opt.)
, a mirror having a paraboloidal surface which gives for parallel rays (as those from very distant objects) images free from aberration. It is used in reflecting telescopes.
– Parabolic spindle
, the solid generated by revolving the portion of a parabola cut off by a line drawn at right angles to the axis of the curve, about that line as an axis.
– Parabolic spiral
, a spiral curve conceived to be formed by the periphery of a semiparabola when its axis is wrapped about a circle; also, any other spiral curve having an analogy to the parabola.