Definition of arsphenamine
: a light-yellow toxic hygroscopic powder C12Cl2H14As2N2O2·2H2O formerly used in the treatment especially of syphilis and yaws
Origin of arsphenamine
International Scientific Vocabulary arsenic + phenamine
First Known Use: 1917
Seen and Heard
What made you want to look up arsphenamine? Please tell us where you read or heard it (including the quote, if possible).