(ת') יסודי, בסיסי, אלמנטרי; לא מפותח, מנוון

adj. basic, elementary, fundamental; not fully developed, immature

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Adjective
1. being or involving basic facts or principles; "the fundamental laws of the universe"; "a fundamental incompatibility between them"; "these rudimentary truths"; "underlying principles"
(synonym) fundamental, underlying
(similar) basic
2. being in the earliest stages of development; "rudimentary plans"
(similar) incomplete, uncomplete
3. not fully developed in mature animals; "rudimentary wings"
(synonym) vestigial
(similar) undeveloped
(classification) biology, biological science

příd.jm. základní

Przym. podstawowy; elementarny

(a.)
Very imperfectly developed; in an early stage of development; embryonic.
  

(a.)
Of or pertaining to rudiments; consisting in first principles; elementary; initial; as, rudimental essays.