12 letters · 24 points in Scrabble
noun toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis
originProbably from metho- + tre- (“alteration of pteridine”) + (carbo)x(yl)ate.
Etymology from Wiktionary, CC BY-SA 3.0