Parabolic spindle
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.

Look at other dictionaries:

  • 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… …   The Collaborative International Dictionary of English

  • Parabolic conoid — 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.… …   The Collaborative International Dictionary of English

  • Parabolic mirror — 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.… …   The Collaborative International Dictionary of English

  • Parabolic spiral — 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.… …   The Collaborative International Dictionary of English

  • Parabolical — 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.… …   The Collaborative International Dictionary of English

  • fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …   Universalium

  • Sulfur lamp — The sulfur lamp (also sulphur lamp) is a highly efficient full spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation. The technology was developed in the early 1990s, but,… …   Wikipedia

  • Drumlin — For the band, see Drumlin (band). Elongate and forested drumlins south of Puerto Williams, Chile. Flow direction here was at time of formation from west to east (left to right on picture) …   Wikipedia

  • List of problems solved by MacGyver — This is a list of problems that have been solved by the fictional character MacGyver from the television series of the same name. (This list is not yet comprehensive.) MacGyver employs his resourcefulness and his knowledge of chemistry,… …   Wikipedia

  • North Carolina Museum of Art — West Building Entrance Canopy Established 1947 Location 2110 Blue Ridge Road, Raleigh, NC 27607 Director …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”