# tracer

> English word · Noun · IPA /ˈtɹeɪsə(ɹ)/ · frequency rank #22,840

## Definitions
1. A compound, element, or isotope used to track the progress or history of a natural process.
2. 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.
3. The act or state of tracking or investigating something.
4. A request to trace the movements of a person or an object, such as a shipment.
5. A person who traces something.
6. A device or instrument used to assist in making tracings.
7. A process that traces something, such as the path of execution of a program during debugging.

## Etymology
From trace + -er.

## Easily confused with
- **trade** (https://plainspell.com/en/vs/tracer-vs-trade)
- **track** (https://plainspell.com/en/vs/tracer-vs-track)
- **Tracy** (https://plainspell.com/en/vs/tracer-vs-tracy)
- **tract** (https://plainspell.com/en/vs/tracer-vs-tract)
- **truce** (https://plainspell.com/en/vs/tracer-vs-truce)
- **trier** (https://plainspell.com/en/vs/tracer-vs-trier)
- **travel** (https://plainspell.com/en/vs/tracer-vs-travel)
- **tracks** (https://plainspell.com/en/vs/tracer-vs-tracks)
- **traded** (https://plainspell.com/en/vs/tracer-vs-traded)
- **trades** (https://plainspell.com/en/vs/tracer-vs-trades)
- **traces** (https://plainspell.com/en/vs/tracer-vs-traces)
- **trader** (https://plainspell.com/en/vs/tracer-vs-trader)
- **trance** (https://plainspell.com/en/vs/tracer-vs-trance)
- **Tracey** (https://plainspell.com/en/vs/tracer-vs-tracey)
- **trailer** (https://plainspell.com/en/vs/tracer-vs-trailer)
- **trainer** (https://plainspell.com/en/vs/tracer-vs-trainer)
- **tracked** (https://plainspell.com/en/vs/tracer-vs-tracked)
- **tractor** (https://plainspell.com/en/vs/tracer-vs-tractor)
- **tracker** (https://plainspell.com/en/vs/tracer-vs-tracker)
- **Travers** (https://plainspell.com/en/vs/tracer-vs-travers)

## Common misspellings (9)
`rtacer`, `tarcer`, `traccer`, `tracerr`, `tracre`, `traecr`, `trcaer`, `trracer`, `ttracer`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tracer