BACILLUS Meaning of BACILLUS in English transcription, транскрипция: [ bəˈsɪləs ]n. (pl. bacilli) 1 any rod-shaped bacterium. 2 (usu. in pl.) any pathogenic bacterium. [LL, dimin. of L baculus stick] English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012