# Parabolic

Parabolic
Parabolic Par`a*bol"ic, Parabolical Par`a*bol"ic*al, a. [Gr. paraboliko`s figurative: cf. F. parabolique. See {Parable}.] [1913 Webster] 1. Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction. [1913 Webster]

2. [From {Parabola}.] (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. [1913 Webster +PJC]

{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. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Synonyms:

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• parabolic — (adj.) mid 15c., from L.L. parabolicus, from Gk. parabolikos figurative, from parabole (see PARABLE (Cf. parable)) …   Etymology dictionary

• parabolic — ► ADJECTIVE 1) of or like a parabola or part of one. 2) of or expressed in parables …   English terms dictionary

• parabolic — parabolic1 [par΄ə bäl′ik] adj. [LL parabolicus < LGr parabolikos] of, in the form of, or expressed by a parable: also parabolical parabolically adv. parabolic2 [par΄ə bäl′ik] adj. 1. of or like a parabola 2. bowl shaped, as a reflector,… …   English World dictionary

• parabolic — PARABÓLIC1, Ă, parabolici, ce, adj. De forma unei parabole1; curbat. – Din fr. parabolique, germ. parabolisch. Trimis de valeriu, 13.09.2007. Sursa: DEX 98 ﻿ PARABÓLIC2, Ă, parabolici, ce, adj. Cu caracter de parabolă2; alegoric. – Din fr.… …   Dicționar Român

• parabolic — [[t]pæ̱rəbɒ̱lɪk[/t]] ADJ: usu ADJ n A parabolic object or curve is shaped like a parabola. ...a parabolic mirror …   English dictionary

• parabolic — adjective Etymology: in sense 1, from Late Latin parabola parable; in sense 2, from New Latin parabola Date: 1669 1. expressed by or being a parable ; allegorical 2. of, having the form of, or relating to a parabola < motion in a parabolic curve… …   New Collegiate Dictionary

• parabolic — parabolic1 /par euh bol ik/, adj. 1. having the form or outline of a parabola. 2. having a longitudinal section in the form of a paraboloid or parabola: a parabolic reflector. 3. of, pertaining to, or resembling a parabola. [1695 1705; PARABOL(A) …   Universalium

• parabolic — 1. adjective a) Of, or pertaining to, or in the shape of a parabola or paraboloid b) Of or pertaining to a parable 2. noun A parabolic function, equation etc …   Wiktionary

• Parabolic cylindrical coordinates — are a three dimensional orthogonal coordinate system that results from projecting the two dimensional parabolic coordinate system in theperpendicular z direction. Hence, the coordinate surfaces are confocal parabolic cylinders. Parabolic… …   Wikipedia

• Parabolic coordinates — are a two dimensional orthogonal coordinate system in which the coordinate lines are confocal parabolas. A three dimensional version of parabolic coordinates is obtained by rotating the two dimensional system about the symmetry axis of the… …   Wikipedia