parabolic

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

Parabolic \Par'a*bol"ic\, Parabolical \Par'a*bol"ic*al\, adjective [Gr. paraboliko's figurative: cf. F. parabolique. See {Parable}.]

1. Of the nature of a parable; expressed by a parable or figure; allegorical; as, parabolical instruction.

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.

From WordNet (r) 3.0 (2006) [wn]:

parabolic

adjective

1: resembling or expressed by parables [syn: {parabolic}, {parabolical}]

2: having the form of a parabola [syn: {parabolic}, {parabolical}]

1. Caduceus  2. Golden Key  3. Scales of Justice (Or maybe, 1. HEALTH 2. SECURITY 3. JUSTICE?)

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