- 1 [countable, uncountable] a mark, an object, or a sign that shows that someone or something existed or was present It's exciting to discover traces of earlier civilizations. Police searched the area but found no trace of the escaped prisoners. Years of living in New York had eliminated all trace of her Southern accent. The ship had vanished without a trace.
- 2 [countable] trace of something a very small amount of something The autopsy revealed traces of poison in his stomach. She spoke without a trace of bitterness.
- 3[countable] (technology) a line or pattern on paper or a screen that shows information that is found by a machine The trace showed a normal heart rhythm.
- 4 [countable] trace on somebody/something a search to find out information about the identity of someone or something, especially what number a telephone call was made from The police ran a trace on the call. Detectives are doing a trace on the vehicle.
- 5 [countable, usually plural] one of the two long pieces of leather that fasten a carriage or cart to the horse that pulls it
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