'Lineally' definitions:
Definition of 'lineally'
(from WordNet)
adverb
By an unbroken line of descent; "she is related lineally to the Royal Family"
Definition of 'Lineally'
From: GCIDE
- Lineally \Lin"e*al*ly\ (l[i^]n"[-e]*al*l[y^]), adv. In a lineal manner; as, the prince is lineally descended from the Conqueror. [1913 Webster]