субстратsubstratum [i, n];
рудокопfossor [oris, m];
возлежатьcubare, o, ui,
traditor [oris, m] (alicujus scientiae);professor [oris, m];praeceptor [oris, m];magister [tri, m];doctor [oris, m];institutor [oris, m];instructor [oris, m];