TRANSFERRIN Meaning of TRANSFERRIN in English [ trans'fɛrɪn , trα:ns- , -nz- ]■ noun Biochemistry a protein which transports iron in blood serum.Origin1940s: from trans- + L. ferrum 'iron' + -in 1 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004