mass spectrometry

noun

: an instrumental method for identifying the chemical constitution of a substance by means of the separation of gaseous ions according to their differing mass and charge

called also mass spectroscopy

mass spectrometer noun
mass spectrometric adjective

Examples of mass spectrometry in a Sentence

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Modern mass spectrometry faces a sequential bottleneck because most instruments analyze molecules one by one, a process that is often too slow and insensitive to detect rare but key biological signals. Mrigakshi Dixit, Interesting Engineering, 18 Mar. 2026 Each lab used the same instruments and technologies, allowing Preta’s team to sift through a standardized set of open-source mass spectrometry data to do its own analysis. Susanne Rust follow, Los Angeles Times, 16 Mar. 2026 Musah measured the chemical profiles, called the metabolome, of insect eggs, larvae and pupae using a type of mass spectrometry—a technique that can tease apart molecules called metabolites based on their mass and charge. Rohini Subrahmanyam, Scientific American, 10 Mar. 2026 Each sample was then analyzed with liquid chromatography-tandem mass spectrometry (LC-MS), and cafestol and kahweol levels were measured. New Atlas, 2 Jan. 2026 See All Example Sentences for mass spectrometry

Word History

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of mass spectrometry was in 1926

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Cite this Entry

“Mass spectrometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mass%20spectrometry. Accessed 19 Mar. 2026.

Medical Definition

mass spectrometry

noun
: an instrumental method for identifying the chemical constitution of a substance by means of the separation of gaseous ions according to their differing mass and charge

called also mass spectroscopy

mass spectrometric adjective
mass spectrometrically adverb

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