lineal

from WordNet (r) 3.0 (2006)
lineal
    adj 1: in a straight unbroken line of descent from parent to
           child; "lineal ancestors"; "lineal heirs"; "a direct
           descendant of the king"; "direct heredity" [syn:
           {lineal}, {direct}] [ant: {collateral}, {indirect}]
    2: arranged in a line
    
from The Collaborative International Dictionary of English v.0.48
Lineal \Lin"e*al\ (l[i^]n"[-e]*al), a. [L. linealis belonging to
   a line, fr. linea line: cf. F. lin['e]al. See 3d {Line}.]
   1. Descending in a direct line from an ancestor; hereditary;
      derived from ancestors; -- opposed to {collateral}; as, a
      lineal descent or a lineal descendant.
      [1913 Webster]

            The prime and ancient right of lineal succession.
                                                  --Locke.
      [1913 Webster]

   2. Inheriting by direct descent; having the right by direct
      descent to succeed (to).
      [1913 Webster]

            For only you are lineal to the throne. --Dryden.
      [1913 Webster]

   3. Composed of lines; delineated; as, lineal designs.
      [1913 Webster]

   4. In the direction of a line; of or pertaining to a line;
      measured on, or ascertained by, a line; linear; as, lineal
      magnitude.
      [1913 Webster]

   {Lineal measure}, the measure of length; -- usually written
      {linear measure}.
      [1913 Webster]
    
from Bouvier's Law Dictionary, Revised 6th Ed (1856)
LINEAL. That which comes in a line. Lineal consanguinity is that which 
subsists between persons, one of whom is descended in a direct line from the 
other. Lineal descent, is that which takes place among lineal kindred. 
    
from Moby Thesaurus II by Grady Ward, 1.0
69 Moby Thesaurus words for "lineal":
      after, arrowlike, attendant, cadet, catenary, clannish,
      consecutive, dead straight, diphyletic, direct, ensuing, ethnic,
      even, family, flat, following, genealogical, genetic, gentile,
      gentilic, horizontal, in a line, junior, later, level, linear,
      national, ordinal, phyletic, phylogenetic, posterior, progressive,
      puisne, racial, rectilineal, rectilinear, right, ruler-straight,
      sequent, sequential, serial, seriate, smooth, straight,
      straight-cut, straight-front, straight-side, streamlined,
      subsequent, succeeding, successional, successive, totemic, tribal,
      true, unbending, unbent, unbowed, unbroken, uncurved, undeflected,
      undeviating, undistorted, uninterrupted, unswerving, unturned,
      upright, vertical, younger

    

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