¹ Source: wiktionary.com
Medical Definition of Citrovorum factor
1. N5Formyl-5,6,7,8-tetrahydrofolic acid;the active form of folic acid which acts as a formyl group carrier in transformylation reactions; the calcium salt, leucovorin calcium, has therapeutic use. Synonym: citrovorum factor, leucovorin. (05 Mar 2000)