arsenotherapy

noun
ar·​se·​no·​ther·​a·​py | \ ˌärs-nō-ˈther-ə-pē, ˌärs-ᵊn-ō-, är-ˌsen-ō- How to pronounce arsenotherapy (audio) \
plural arsenotherapies

Medical Definition of arsenotherapy

: treatment of disease with any form of arsenic