From WordNet (r) 3.0 (2006) [wn]:
traditional
adj 1: consisting of or derived from tradition; "traditional
history"; "traditional morality" [ant: nontraditional,
untraditional]
2: pertaining to time-honored orthodox doctrines; "the simple
security of traditional assumptions has vanished"
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Traditional \Tra*di"tion*al\, a. [Cf. F. traditionnel, LL.
traditionalis.]
1. Of or pertaining to tradition; derived from tradition;
communicated from ancestors to descendants by word only;
transmitted from age to age without writing; as,
traditional opinions; traditional customs; traditional
expositions of the Scriptures.
[1913 Webster]
2. Observant of tradition; attached to old customs;
old-fashioned. [R.] --Shak.
[1913 Webster]