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English Dictionary: abscissas by the DICT Development Group
1 result for abscissas
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Abscissa \Ab*scis"sa\, n.; E. pl. {Abscissas}, L. pl.
      {Absciss[91]}. [L., fem. of abscissus, p. p. of absindere to
      cut of. See {Abscind}.] (Geom.)
      One of the elements of reference by which a point, as of a
      curve, is referred to a system of fixed rectilineal
      co[94]rdinate axes.
      Note: When referred to two intersecting axes, one of them
               called the axis of abscissas, or of X, and the other
               the axis of ordinates, or of Y, the abscissa of the
               point is the distance cut off from the axis of X by a
               line drawn through it and parallel to the axis of Y.
               When a point in space is referred to three axes having
               a common intersection, the abscissa may be the distance
               measured parallel to either of them, from the point to
               the plane of the other two axes. Abscissas and
               ordinates taken together are called co[94]rdinates. --
               OX or PY is the abscissa of the point P of the curve,
               OY or PX its ordinate, the intersecting lines OX and OY
               being the axes of abscissas and ordinates respectively,
               and the point O their origin.
No guarantee of accuracy or completeness!
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