arsphenamine
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ars·phen·a·mine
(ärs-fĕn′ə-mēn′)n.
A drug formerly used to treat syphilis, yaws, and other spirochetal infections.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
arsphenamine
(ɑːsˈfɛnəmɪn; -ˌmiːn)n
(Pharmacology) a drug containing arsenic, formerly used in the treatment of syphilis and related infections
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