Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
- not readily damaged by fire
- not catching fire
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Resistant to catching fire; flame-retardant.transitive verb flame·proofed, flame·proof·ing, flame·proofs
To make resistant to catching fire.