# metformin

> English word · Noun · IPA /mɛtˈfɔː.mɪn/ · frequency rank #50,068

## Definitions
1. 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.

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/metformin