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

Recent Examples on the Web
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The researchers examined its composition and formation using techniques including X-ray photoelectron spectroscopy, time-of-flight secondary ion mass spectrometry and transmission electron microscopy. — Atharva Gosavi, Interesting Engineering, 22 Sep. 2026 PrecivityAD2 is a single blood test that quickly assesses the proteins amyloid and tau, using mass spectrometry to measure plasma Aβ42/40 and p-tau217/np-tau217. — New Atlas, 24 Aug. 2026 Rather than trying to miniaturize the entire testing infrastructure into a small and convenient device, Biolyz uses a large, complex and expensive mass spectrometry technology. — Justin Birnbaum, Sportico.com, 10 Aug. 2026 The investigators use tools such as X‑ray fluorescence spectrometry, scanning electron microscopy and laser ablation mass spectrometry. — Gabriela Sa Pessoa, Fortune, 24 July 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 25 Sep. 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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