This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A drug, C18H26ClN3, used mainly in the treatment and prevention of malaria.

n. A 4-aminoquinoline drug used to treat and prevent malaria, having the chemical formula C18H26ClN3

n. an antimalarial drug used to treat malaria and amebic dysentery and systemic lupus erythematosus

"To begin with, the fitness ratio of CQR malaria in the absence of chloroquine is .76 or .85."

antimalarial drug    antimalarial   

primaquine    disodium    dinucleotide    periodate    tetra-