from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An alkylating agent, C6H14O6S2, that is used as an antineoplastic drug in the treatment of chronic myelocytic leukemia.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A particular drug used in chemotherapy.
bu(tane) + alteration of sulfon(ate).(American Heritage® Dictionary of the English Language, Fourth Edition)