tracer

noun/ˈtreɪsər/

Frequency rank: #10,791 most common English word

Meaning

a substance or device used to follow or detect the path of something.

Illustration for the English word “tracer”

Example sentence

The doctor injected tracer dye into the patient's bloodstream to track the blood flow.

Synonyms & related words

Practice this word in the quiz

More words in ranks 10,701–10,800