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Parabolical   Listen
adjective
Parabolical, Parabolic  adj.  
1.
Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction.
2.
(Geom.)
(a)
Having the form or nature of a parabola; pertaining to, or resembling, a parabola; as, a parabolic curve.
(b)
Having a form like that generated by the revolution of a parabola, or by a line that moves on a parabola as a directing curve; as, a parabolic conoid; a parabolic reflector; a parabolic antenna.
Parabolic 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.





Collaborative International Dictionary of English 0.48


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"Parabolical" Quotes from Famous Books



... answering to sense, which the older critics made so much of; the additional syllable which breaks the measure, and necessitates an increased rapidity of utterance, seeming to express to the ear the rush of the sword up its parabolic curve. And with what lavish richness of presentative power is the boreal aurora, the collision, the crash, and the thunder of the meeting icebergs, brought before the eye. An inferior artist would have shouted through a page, and emptied a whole pallet of colour, without any result but ...
— Selections from Wordsworth and Tennyson • William Wordsworth and Alfred Lord Tennyson
... held poetry to belong to the fancy, and assigned to it a place between history and science. Epic poetry he awarded to the former, "parabolic" poetry to the latter. Elsewhere he talks of poetry as a dream, and affirms that it is to be held "rather as an amusement of the intelligence than as a science." For him music, painting, sculpture, ...
— Aesthetic as Science of Expression and General Linguistic • Benedetto Croce
... greater skill was invoked, and lamps reinforced by parabolic reflectors poured their light upon the sea. Several of these lamps were sometimes grouped together so as to intensify the light, which at a little distance appeared as if it emanated from a single source. This 'catoptric' form of apparatus ...
— Fragments of science, V. 1-2 • John Tyndall
... package he had brought, holding it to his eye as if sighting it, his right hand grasping a handle as one holds a stereoscope. A moment later, as I examined it more closely, I saw that instead of looking at anything he had before him a small parabolic ...
— The War Terror • Arthur B. Reeve
... interrupted, "do not try to guess it, for you never will. I turn the flange inward on a Wilkinson lathe and give it a parabolic section so that the axes are always parallel to each other and ...
— First and Last • H. Belloc
... nucleus of the comet had grown dull and began to disperse, and Jupiter's moon was close to it. The fourth night the comet had been divided into two parts; there were two heads and two tails, and both the starry phantoms began in separate parabolic curves their aimless flight through space. So "this" occurs in the heavens as ...
— Timar's Two Worlds • Mr Jkai


Words linked to "Parabolical" :   parabola, parabolic, rounded


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