photometry

noun

pho·​tom·​e·​try fō-ˈtä-mə-trē How to pronounce photometry (audio)
: a branch of science that deals with measurement of the intensity of light
also : the practice of using a photometer

Examples of photometry in a Sentence

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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The researchers used fiber photometry systems to detect neurotransmitters, which involved injecting the mice with fluorescent sensors. — Elana Spivack, Popular Science, 19 Mar. 2025 The team pulled it off by using a technique called flow fiber photometry which works by imaging fluids tagged with fluorescent markers using a probe implanted in the brain. — Ars Technica, 20 Jan. 2025

Word History

Etymology

New Latin photometria, from phot- + -metria -metry

First Known Use

1807, in the meaning defined above

Time Traveler
The first known use of photometry was in 1807

Rhymes for photometry

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photometry
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Cite this Entry

“Photometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photometry. Accessed 25 Mar. 2025.

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Medical Definition

photometry

noun
pho·​tom·​e·​try fō-ˈtäm-ə-trē How to pronounce photometry (audio)
plural photometries
: a branch of science that deals with measurement of the intensity of light
also : the practice of using a photometer

More from Merriam-Webster on photometry

Britannica.com: Encyclopedia article about photometry

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