methotrexate
/ˌmeθəˈtrekseɪt/noun
mass noun
1- Medicine a synthetic compound that interferes with cell growth and is used to treat leukaemia and other forms of cancer.【医】氨甲蝶呤（抗肿瘤药）。
1.1
- Alternative name: 4-amino-10-methylfolic acid; chem. formula: C20H22N8O5.又名： 4-氨基-10-甲基叶酸; 化学分子式： C20H22N8O5.
词源
1950s: from meth- (denoting a substance containing methyl groups) + elements of unknown origin.