
1) Like asbestos 2) Treated to resist burning
Found on
https://www.crosswordclues.com/clue/flame-retardant

Flame retardants are compounds added to manufactured materials, such as plastics and textiles, and surface finishes and coatings that inhibit, suppress, or delay the production of flames to prevent the spread of fire. They may be mixed with the base material (additive flame retardants) or chemically bonded to it (reactive flame retardants). Minera...
Found on
http://en.wikipedia.org/wiki/Flame_retardant

Having the ability to resist combustion (A flame retardant plastic is considered to be one that will not continue to burn or glow after the source of ignition has been removed.) Retardant, or retarder: a substance used in small proportion to reduce the reaction rate of a chemical system. Flame retardant: a substance added, or treatment applied, to ...
Found on
http://www.blowmachines.com/glossary1.htm

A material that resists burning when exposed to a flame.
Found on
http://www.encyclo.co.uk/local/20829

Chemical applied to fabric to reduce its ignitability when exposed to fire. In some places regular or periodic flame retardant of stage drapes and sets is law.
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http://www.encyclo.co.uk/visitor-contributions.php

A chemical applied to a fabric, or incorporated into the fiber at the time of production, which significantly reduces a fabric's flammability.
Found on
http://www.fabriclink.com/dictionaries/performanceglossary.cfm

A resin formulated to resist burning
Found on
http://www.protomold.co.uk/Glossary.xhtml

Used by recycled plastic and plastic compound manufacturers, flame retardants are reactive compounds and additive compounds to make the finished plastic extrusion products fire resistant. A flame retardant plastic is considered to be one that will not continue to burn or glow after the source of ignition has been removed.
Found on
https://www.dwplastics.co.uk/glossary/

Reactive compounds and additive compounds to render a polymer fire resistant. Reactive compounds become an integral part of the polymer.
Found on
https://www.encyclo.co.uk/local/23693

a compound used in cloth and plastic material to raise the ignition point of the material, thus making it resistant to fire.
Found on
https://www.infoplease.com/dictionary/flame-retardant
No exact match found.