flameproof

adj, verb — 2 senses

flameproof

adj

Etymology From flame + -proof.

1

Resistant to catching fire.

One hundred and fifty miles of flameproof wire have been used in the signalboxes and relay rooms.1952 December, “Brighton Line Resignalling, Southern Region”, in Railway Magazine, page 830:

Synonyms: fireproof

flameproof

verb

Etymology From flame + -proof.

1

To make flameproof.

Structural timber in the roofs throughout the station has been flameproofed.1960 September, M. J. Wilson, “Harlow Town station opened”, in Trains Illustrated, page 542:

Derived terms: flameproofer

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.