Fire retardant refers to materials or products that are designed to resist burning or reduce the spread of fire. Fire retardant materials are commonly used in building construction, textiles, and other applications where there is a risk of fire.  In personal protection, fire retardant clothing is often worn by workers in industries such as welding, firefighting, and electrical work. These clothing items are designed to protect the wearer from burns and injuries in the event of a fire or electrical arc. 

Fire retardant materials are typically treated with special chemicals that make them more resistant to heat and flames. They are rigorously tested to ensure that they meet safety standards and regulations. 

It is important to note that fire retardant materials are not fireproof and should not be relied upon solely for protection. Proper safety measures and procedures, including training and equipment, should always be used in conjunction with fire retardant materials to minimize the risk of fire-related injuries or fatalities.