[syn: vestigial, rudimentary]
The Collaborative International Dictionary of English v.0.48:
Rudimentary \Ru`di*men"ta*ry\, a. [Cf. F. rudimentaire.]
1. Of or pertaining to rudiments; consisting in first
principles; elementary; initial; as, rudimental essays.
[1913 Webster]
2. (Biol.) Very imperfectly developed; in an early stage of
development; embryonic.
[1913 Webster]
WordNet (r) 3.0 (2006):
rudimentary
adj 1: being or involving basic facts or principles; "the
fundamental laws of the universe"; "a fundamental
incomatibility between them"; "these rudimentary truths";
"underlying principles" [syn: fundamental,
rudimentary, underlying]
2: being in the earliest stages of development; "rudimentary
plans"
3: not fully developed in mature animals; "rudimentary wings"
[syn: vestigial, rudimentary]