something that retards; esp., a substance that delays a chemical reaction
that retards or tends to retard
Acting or tending to retard. Often used in combination: flame-retardant pajamas for children; a fire-retardant security chest.
A substance that retards a process, as a flame retardant.
(comparative more retardant, superlative most retardant)
- (often in combination) Serving to retard (slow down) the action of something
- (often in combination) Something that serves to retard (slow down) the action of something