Lineal

a.	1.	Descending in a direct line from an ancestor; hereditary; derived from ancestors; - opposed to collateral; as, a lineal descent or a lineal descendant. The prime and ancient right of lineal succession. - Locke.
	2.	Inheriting by direct descent; having the right by direct descent to succeed (to). For only you are lineal to the throne. - Dryden.
	3.	Composed of lines; delineated; as, lineal designs.
	4.	In the direction of a line; of or pertaining to a line; measured on, or ascertained by, a line; linear; as, lineal magnitude. Lineal measure the measure of length; - usually written linear measure.

Adj.	1.	lineal - in a straight unbroken line of descent from parent to child; "lineal ancestors"; "lineal heirs"; "a direct descendant of the king"; "direct heredity" Synonyms: direct Antonyms: collateral, indirect - descended from a common ancestor but through different lines; "cousins are collateral relatives"; "an indirect descendant of the Stuarts"
	2.	lineal - arranged in a line

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.

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