'fire-retardant' definitions:

Definition of 'fire-retardant'

(from WordNet)
adjective
Difficult to burn [syn: fire-retardant, fire- resistant, fire-resisting, fire-resistive]

Definition of 'fire-retardant'

From: GCIDE
  • fire-retardant \fire-retardant\ adj. able to reduce combustibility or slow the spread of fire; -- of substances that are added to combustible materials to make them less combustible. PJC]