COLIFORM Meaning of COLIFORM in English [ 'kɒlɪfɔ:m ]■ adjective Biology belonging to a group of rod-shaped bacteria typified by E. coli .Originearly 20th cent.: from mod. L. coli 'of the colon' + -iform . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004