Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “fireproof”


adjective     /ˈfaɪəpruːf/
unable to be damaged by fire : fireproof safe/vault Each night we store our data on a back-up disc in a fireproof safe .
(Definition of fireproof adjective from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of fireproof

Definitions of “fireproof” in other dictionaries

Translations of “fireproof”

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More