Definition of fire-retardant adjective from the Oxford Advanced Learner's Dictionary

 

fire-retardant

 adjective
adjective
BrE BrE//ˈfaɪə rɪˌtɑːdənt//
 
; NAmE NAmE//ˈfaɪər rɪˌtɑːrdənt//
 
(also flame-retardant)[usually before noun]
 
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that makes a fire burn more slowly The chair had fire-retardant covers.
See the Oxford Advanced American Dictionary entry: fire-retardant