lineal

Belonging to or being in the direct line of descent from an ancestor.

Derived from or relating to a particular line of descent; hereditary.

Linear.

Of or pertaining to the line or officers of the line in the army or navy.

Of or pertaining to a line or length; extending in a line; involving the single dimension of length: as, lineal measure; a lineal foot.

Proceeding in a direct or unbroken line; hereditary; unbroken in course: distinguished from collateral: as, lineal descent; lineal succession.

Pertaining or relating to direct descent; hereditary in quality or character; having an ancestral basis or right.

Allied by direct descent.

Descending in a direct line from an ancestor; hereditary; derived from ancestors; — opposed to collateral.

Inheriting by direct descent; having the right by direct descent to succeed (to).