Definition of phenformin in US English:

phenformin

noun

Pharmacology
  • A drug used in the oral treatment of diabetes mellitus (now largely withdrawn from use because of the side effect of lactic acidosis).

Origin

1950s; earliest use found in Canadian Medical Association Journal. From phen- + form- + -in, components of the molecular structure of the drug.

Pronunciation

phenformin

/fɛnˈfɔːmɪn/