1 a bullet or SHELL (= a kind of bomb) that leaves a line of smoke or flame behind it:
tracer bullets
2 (technical) a RADIOACTIVE substance that can be seen in the human body and is used to find out what is happening inside the body:
Radioactive tracers have been used to map the metabolic activity of the brain.
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About this entry
This is a English–English dictionary entry.
Sourced from Main Dictionary in Lughet's collection.
This word also appears under other sources in Lughet's collection — see the list below.
This entry for tracer is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is tracer a noun, verb, or something else?
In this entry, tracer is tagged as noun.
Does tracer appear elsewhere on Lughet?
Yes — tracer appears under other sources or language pairs in Lughet's collection. See the list below.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.
