1947, in the meaning defined above
Time Traveler for flame-retardant
See more words from the same year
From the Editors at Merriam-Webster
Flammable vs. Inflammable
Both words mean the same thing, but one of them is bound to confuse most people.
Cite this Entry
“Flame-retardant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flame-retardant. Accessed 30 Jun. 2022.
See Definitions and Examples »
Get Word of the Day daily email!
Words Named After People
Test your visual vocabulary with our 10-question challenge!
A daily challenge for crossword fanatics.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
As illustrated by some very smart pups
Bikini, bourbon, and badminton were places first
Do you take pride in Pride?
Look up any year to find out
How to use a word that (literally) drives some pe...
We're intent on clearing it up
Editor Emily Brewster clarifies the difference.
"The public is a hot mess"
Take a (break/brake) and (pore/pour) over this (c...
Take the quiz
Find out who’s behind "leotard," "morphine," an...
Test your visual vocabulary with our 10-question ...
Can you outdo past winners of the National Spelli...