neostigmine

noun

neo·​stig·​mine ˌnē-ə-ˈstig-ˌmēn How to pronounce neostigmine (audio)
: an anticholinesterase drug used in the form of its bromide C12H19BrN2O2 or a methyl sulfate derivative C13H22N2O6S especially in the diagnosis and treatment of myasthenia gravis and in the treatment of urinary bladder or bowel atony

Examples of neostigmine in a Sentence

Recent Examples on the Web
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Two common drugs — neostigmine and glycopyrrolate — could buy a victim some time. Erik Vance, Discover Magazine, 19 June 2014

Word History

Etymology

neo- + (physo)stigmine

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of neostigmine was in 1941

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Cite this Entry

“Neostigmine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neostigmine. Accessed 9 Sep. 2025.

Medical Definition

neostigmine

noun
neo·​stig·​mine ˌnē-ə-ˈstig-ˌmēn How to pronounce neostigmine (audio)
: an anticholinesterase drug that is used in the form of its bromide C12H19BrN2O2 or a methyl sulfate derivative C13H22N2O6S especially in the diagnosis and treatment of myasthenia gravis and in the treatment of urinary bladder or bowel atony see prostigmin

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