Rudimentary

рудиментарный

Англо-русский научно-технический словарь

Rudimentary

прилагательное 1) элементарный Синоним(ы): beginning 2) зачаточный, недоразвитый, рудиментарный Синоним(ы): underdeveloped

Большой англо-русский словарь

Rudimentary

adjective 1. consisting in first principles; fundamental Example: had only a rudimentary formal education — D. J. Boorstin 2. of a primitive kind Example: the equipment of these past empire-builders was rudimentary — A. J. Toynbee 3. very imperfectly developed or represented only by a vestige Example: the rudimentary tail of a hyraxrudimentarily adverbrudimentariness noun

Энциклопедический словарь Мерриама-Вебстера