metformin

From meth- +‎ -formin (“phenformin derivative”).

• (Received Pronunciation) IPA^(key): /mɛtˈfɔː.mɪn/
• (General American) IPA^(key): /mɛtˈfɔɹ.mɪn/

• Audio (General American):

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metformin (countable and uncountable, plural metformins)

1. (pharmacology) A biguanide derivative, C₄H₁₁N₅, used, now chiefly as the hydrochloride, as an oral hypoglycemic agent in the treatment of type 2 diabetes mellitus; 1,1-dimethylbiguanide.

• “metformin”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “metformin”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.