as in tracker
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Recent Examples of tracer
The researchers used positron emission tomography (PET) scans, along with a radioactive tracer to measure the production of a chemical called acetylcholine in the participants’ brains at the start and end of the study.
—
Korin Miller, SELF, 23 Oct. 2025
The imaging technique relies on the use of a radioactive tracer and a special camera to make pictures of breast tissue.
—Hannah Millington, MSNBC Newsweek, 3 Oct. 2025
Bradley had previously held a temporary position with the county as a contact tracer during the pandemic.
—Lucas Robinson, San Diego Union-Tribune, 18 Sep. 2025
Their tracer arcs converged on the approaching drones.
—Ken Harbaugh, The Atlantic, 15 Sep. 2025
See All Example Sentences for tracer
Korin Miller, SELF, 23 Oct. 2025
The imaging technique relies on the use of a radioactive tracer and a special camera to make pictures of breast tissue.
—Hannah Millington, MSNBC Newsweek, 3 Oct. 2025
Bradley had previously held a temporary position with the county as a contact tracer during the pandemic.
—Lucas Robinson, San Diego Union-Tribune, 18 Sep. 2025
Their tracer arcs converged on the approaching drones.
—Ken Harbaugh, The Atlantic, 15 Sep. 2025
See All Example Sentences for tracer
Recent Examples of Synonyms for tracer
Noun
-
On the Missouri Department of Revenue website, go to the Missouri return tracker.—
Eleanor Nash,
Kansas City Star,
5 Feb. 2026
-
In the melee, Cristhian Mosquera lost his GPS tracker vest.—
James McNicholas,
New York Times,
4 Feb. 2026
Noun
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Langmuir showed that the molecules oriented themselves in a consistent way, looking like little tadpoles with the hydrophilic head, the end that likes water, toward the water, and the hydrophobic tail, the end that dislikes water, sticking up into the air.—
Natalia Sánchez Loayza,
Scientific American,
5 Feb. 2026
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Once stationary, deactivate all lights except the hazard flashers, engage the emergency brake, and release the brake pedal to ensure your tail lights remain unlit, minimizing the chance of other drivers colliding with your stationary vehicle.—
Bay Area Weather Report,
Mercury News,
5 Feb. 2026
Noun
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Wright, who formerly worked as a detective, said the video contains apparent facial features such as a mustache and that investigators should be able to calculate height, shoe size and brands of clothing.—
Ramon Padilla,
USA Today,
11 Feb. 2026
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DeOrzio turned himself in to county detectives Tuesday morning and is awaiting an arraignment and preliminary hearing.—
CBS News,
CBS News,
10 Feb. 2026
Cite this Entry
“Tracer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tracer. Accessed 13 Feb. 2026.
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