'Rudimentary' definitions:

Definition of 'rudimentary'

From: WordNet
adjective
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]
adjective
Being in the earliest stages of development; "rudimentary plans"
adjective
Not fully developed in mature animals; "rudimentary wings" [syn: vestigial, rudimentary]

Definition of 'Rudimentary'

From: GCIDE
  • 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]