as in tracker
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Recent Examples of tracer
To study crowding in cells, biologists needed a proxy molecule in the same size range — a tracer roughly as large as the large molecules involved in most cellular reactions.
—
Quanta Magazine, 18 Feb. 2026
The PET scan uses a radioactive drug called a tracer to show both typical and atypical metabolic activity, according to the Mayo Clinic.
—Stephanie Giang-Paunon, FOXNews.com, 18 Feb. 2026
The dye, a non-toxic tracer often used in environmental studies, transformed the waters of the Grand Canal into a bright green color.
—Julia Jacobo, ABC News, 25 Nov. 2025
In fact, Elsbeth overhears Reynolds paying close attention to a concerned skip tracer (a new-to-me term for a process server) who brings them his worry that Anders is missing in the first place.
—Sophie Brookover, Vulture, 14 Nov. 2025
See All Example Sentences for tracer
Quanta Magazine, 18 Feb. 2026
The PET scan uses a radioactive drug called a tracer to show both typical and atypical metabolic activity, according to the Mayo Clinic.
—Stephanie Giang-Paunon, FOXNews.com, 18 Feb. 2026
The dye, a non-toxic tracer often used in environmental studies, transformed the waters of the Grand Canal into a bright green color.
—Julia Jacobo, ABC News, 25 Nov. 2025
In fact, Elsbeth overhears Reynolds paying close attention to a concerned skip tracer (a new-to-me term for a process server) who brings them his worry that Anders is missing in the first place.
—Sophie Brookover, Vulture, 14 Nov. 2025
See All Example Sentences for tracer
Recent Examples of Synonyms for tracer
Noun
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According to a tracker of anti-LGBTQ+ bills maintained by the American Civil Liberties Union, 2026 is shaping up to be the most aggressive year yet for states.—
Drew Pittock,
USA Today,
14 May 2026
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If that second list sounds familiar, sleep specialists suggest a tracker holiday — a week or two without checking — to recalibrate.—
Allison Palmer,
Kansas City Star,
13 May 2026
Noun
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These gentle giants used the surface area of their long necks and tails to shed heat and regulate their body temperature.—
Laura Baisas,
Popular Science,
14 May 2026
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Various engineers seeking superior grip performance have employed biomimicry in their designs, which have been inspired by seed pods, elephant trunks, lobster tails (in fact, using actual lobster tails), and, of course, octopus limbs.—
New Atlas,
New Atlas,
13 May 2026
Noun
-
Guy Ritchie directed both Sherlock Holmes films, which starred Jude Law as the titular detective's sidekick Watson.—
Jack Smart,
PEOPLE,
20 May 2026
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Her detective Lord Peter Wimsey was usually to be found in the upper-class households and clubs that defined a certain strata of English society in the 1920s and 1930s.—
Literary Hub,
Literary Hub,
20 May 2026
Cite this Entry
“Tracer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/tracer. Accessed 23 May. 2026.
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