tracer

CEFRB2

/ˈtɹeɪsə(ɹ)/

noun

Türkçe translations

Translating…

In plain English

  1. 01

    noun

    A person or device that follows or records movement.

  2. 02

    noun

    Extra detail

    A round of ammunition for a firearm that contains magnesium or another flammable substance arranged such that it will burn and produce a visible trail when fired in the dark.

Examples

  • Positron Emission Tomography uses a radioactive tracer to visualize metabolic activity within the human body.

  • The doctor injected a radioactive tracer to follow blood flow.

At a glance

Sits at B2 on the CEFR scale

Senses
5
Parts of speech
1
Citations
4
Synonyms
2

Deep Dive

noun

Extra meanings

  1. The act or state of tracking or investigating something.

  2. A compound, element, or isotope used to track the progress or history of a natural process.

  3. A request to trace the movements of a person or an object, such as a shipment.

More examples

In context

  • A surveyor typically conducts a tracer on his or her own and later meets up with the rest of the team to discuss findings.

  • We have a five-man tracer on him now. He's heading for a Vorster cell on Michigan Boulevard, and he's drunk as a lord. Should we intercept him?

  • Ain't never running but I'm a paper chasing They gon catch up to me, they gon need a pacer How they over-watching me without a tracer

Synonyms

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

The sniper used a blank round to see where the shot landed at night.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Origin

noun

From trace + -er.