ERGOCALCIFEROL Meaning of ERGOCALCIFEROL in English [ ˌə:gə(ʊ)kal'sɪfərɒl ]■ noun Biochemistry another term for calciferol (vitamin D 2 ).Origin1950s: blend of ergot and calciferol . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004