photometry
noun
pho·tom·e·try
fō-ˈtä-mə-trē 
: 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
Recent Examples on the Web
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
Results from a technique called eclipse photometry—measuring brightness just before and just after a planet disappears behind its star—have also been discouraging.
—Bydaniel Clery, science.org, 20 June 2024
The mission searched for Earth-sized planets beyond the solar system using transit photometry, a then-emerging technology which detects exoplanets by observing when the brightness of a star dips as a planet crosses in front of it.
—Martha Ross, The Mercury News, 25 Jan. 2024
The 37 boulders range in size from three feet to 22 feet across, based on Hubble photometry.
—Julia Musto, Fox News, 22 July 2023
The team say that the photometry suggests Earendel has a surface temperature of between 13000 and 16000 Kelvin.
—The Physics Arxiv Blog, Discover Magazine, 26 Aug. 2022
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.
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
Results from a technique called eclipse photometry—measuring brightness just before and just after a planet disappears behind its star—have also been discouraging.
—Bydaniel Clery, science.org, 20 June 2024
The mission searched for Earth-sized planets beyond the solar system using transit photometry, a then-emerging technology which detects exoplanets by observing when the brightness of a star dips as a planet crosses in front of it.
—Martha Ross, The Mercury News, 25 Jan. 2024
The 37 boulders range in size from three feet to 22 feet across, based on Hubble photometry.
—Julia Musto, Fox News, 22 July 2023
The team say that the photometry suggests Earendel has a surface temperature of between 13000 and 16000 Kelvin.
—The Physics Arxiv Blog, Discover Magazine, 26 Aug. 2022
Cite this Entry
“Photometry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photometry. Accessed 26 Oct. 2025.
Copy CitationMedical Definition
photometry
noun
pho·tom·e·try
fō-ˈtäm-ə-trē
plural photometries
: a branch of science that deals with measurement of the intensity of light
also
: the practice of using a photometer
Love words? Need even more definitions?
Merriam-Webster unabridged
Share