tracer
noun/ˈtreɪsər/
Frequency rank: #10,791 of 20,003 in the WORDED list (wordfreq data)
Meaning
a substance or device used to follow or detect the path of something.
Example sentence
The doctor injected tracer dye into the patient's bloodstream to track the blood flow.
Synonyms & related words
More words in ranks 10,701–10,800
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