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2 definitions found
 for Circular points at infinity
From The Collaborative International Dictionary of English v.0.48 :

  Infinity \In*fin"i*ty\, n.; pl. Infinities. [L. infinitas;
     pref. in- not + finis boundary, limit, end: cf. F.
     infinit['e]. See Finite.]
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     1. Unlimited extent of time, space, or quantity; eternity;
        boundlessness; immensity. --Sir T. More.
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              There can not be more infinities than one; for one
              of them would limit the other.        --Sir W.
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     2. Unlimited capacity, energy, excellence, or knowledge; as,
        the infinity of God and his perfections. --Hooker.
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     3. Endless or indefinite number; great multitude; as an
        infinity of beauties. --Broome.
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     4. (Math.) A quantity greater than any assignable quantity of
        the same kind.
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     Note: Mathematically considered, infinity is always a limit
           of a variable quantity, resulting from a particular
           supposition made upon the varying element which enters
           it. --Davies & Peck (Math. Dict.).
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     5. (Geom.) That part of a line, or of a plane, or of space,
        which is infinitely distant. In modern geometry, parallel
        lines or planes are sometimes treated as lines or planes
        meeting at infinity.
        [1913 Webster]
     Circle at infinity, an imaginary circle at infinity,
        through which, in geometry of three dimensions, every
        sphere is imagined to pass.
     Circular points at infinity. See under Circular.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Circular \Cir"cu*lar\, a. [L. circularis, fr. circulus circle:
     cf. F. circulaire. See Circle.]
     [1913 Webster]
     1. In the form of, or bounded by, a circle; round.
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     2. repeating itself; ending in itself; reverting to the point
        of beginning; hence, illogical; inconclusive; as, circular
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     3. Adhering to a fixed circle of legends; cyclic; hence,
        mean; inferior. See Cyclic poets, under Cyclic.
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              Had Virgil been a circular poet, and closely adhered
              to history, how could the Romans have had Dido?
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     4. Addressed to a circle, or to a number of persons having a
        common interest; circulated, or intended for circulation;
        as, a circular letter.
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              A proclamation of Henry III., . . . doubtless
              circular throughout England.          --Hallam.
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     5. Perfect; complete. [Obs.]
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              A man so absolute and circular
              In all those wished-for rarities that may take
              A virgin captive.                     --Massinger.
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     Circular are, any portion of the circumference of a circle.
     Circular cubics (Math.), curves of the third order which
        are imagined to pass through the two circular points at
     Circular functions. (Math.) See under Function.
     Circular instruments, mathematical instruments employed for
        measuring angles, in which the graduation extends round
        the whole circumference of a circle, or 360[deg].
     Circular lines, straight lines pertaining to the circle, as
        sines, tangents, secants, etc.
     Circular+note{+or+Circular+letter">Circular note{ or Circular letter.
        (a) (Com.) See under Credit.
        (b) (Diplomacy) A letter addressed in identical terms to a
            number of persons.
     Circular numbers (Arith.), those whose powers terminate in
        the same digits as the roots themselves; as 5 and 6, whose
        squares are 25 and 36. --Bailey. --Barlow.
     Circular points at infinity (Geom.), two imaginary points
        at infinite distance through which every circle in the
        plane is, in the theory of curves, imagined to pass.
     Circular polarization. (Min.) See under Polarization.
     Circular sailing or Globular sailing (Naut.), the method
        of sailing by the arc of a great circle.
     Circular saw. See under Saw.
        [1913 Webster]

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