verb (used with object)
to make flameproof.
Origin of flameproof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
not liable to catch fire or be damaged by fire
(of electrical apparatus) designed so that an internal explosion will not ignite external flammable gas
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012