TUBIFEX Meaning of TUBIFEX in English [ 'tju:bɪfɛks ]■ noun a small red annelid worm that lives in fresh water, partly buried in the mud. [Genus Tubifex .]Originmod. L., from L. tubus 'tube' + -fex from facere 'make'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004