The story
Contraction of diaminophenylsulfone.
Etymology from Wiktionary, CC BY-SA 4.0.
dapsone
Today it means: A bacteriostatic antimicrobial agent 4-[(4-aminobenzene)sulfonyl]aniline (C₁₂H₁₂N₂O₂S) used in the treatment of leprosy and a chronic form of dermatitis. Full definition →