In English, many past and present participles of verbs can be used as adjectives. Some of these examples may show the adjective use.
All barrels weretest-firedfor accuracy during the manufacturing process.
From
Wikipedia
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This variant has beentest-firedand uses a solid-fuel ramjet engine.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
The station successfully remotelytest-firedan onboard aircraft cannon at a target satellite while the station was unmanned.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
The highest specific impulse for a chemical propellant evertest-firedin a rocket engine was 542 seconds (5,320 m/s) with a tripropellant of lithium, fluorine, and hydrogen.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.