adjective
- being in the direct line, as a descendant or ancestor, or in a direct line, as descent or succession.
- of or transmitted by lineal descent.
- linear.
adjective
- being in a direct line of descent from an ancestor
- of, involving, or derived from direct descent
- a less common word for linear
adj.late 14c., from Old French lineal (14c.), from Late Latin linealis “pertaining to a line,” from linea (see line (n.)). Related: Lineally.