an antimetabolite drug used in the treatment of certain cancers. Formula: C20H22N8O5
methotrexate in American English
(ˌmɛθoʊˈtrɛksˌeɪt)
noun
an orange-brown, crystalline powder, C20H22N8O5, that is a folic acid antagonist: used in medicine, esp. in treating leukemia, various tumors, psoriasis, and rheumatoid arthritis