- Descending in a direct line from an ancestor; hereditary;
derived from ancestors; -- opposed to collateral; as, a lineal descent
or a lineal descendant. - Inheriting by direct descent; having the right by direct
descent to succeed (to). - Composed of lines; delineated; as, lineal designs. - In the direction of a line; of or pertaining to a line;
measured on, or ascertained by, a line; linear; as, lineal magnitude.
Meaning of 'lineal' (Princeton's WordNet)
1 . lineal
[ a]
Meaning (1): - in a straight unbroken line of descent from parent to child