What is the meaning of Lineal?

Pertaining to a line.

Composed of lines; delineated.

In the direction of a line; of a line; of or relating to a line; measured on, or ascertained by, a line; linear.

Having the quality of proceeding, either physically or conceptually, according to a given rationale or other controlling principles of belief, opinion, practice, or phenomenon.

: Having an ancestral relationship to mothers, fathers, grandparents, (etc.) and having a descendant relationship to sons, daughters, grandchildren (etc.), exclusive of collateral siblings.

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

linear

linear

linear

linear

Source: wiktionary.org