непрочность
fragilitas [atis, f];
подмена
commutatio [onis, f];
пробирка
cylindrum [i, n]
magister [tri, m];
praeceptor [oris, m];
professor [oris, m];
doctor [oris, m];
institutor [oris, m];
instructor [oris, m];
exercitator [oris, m] [exercitor](alicujus rei);