| NOUN | substance | insulating material, insulant, insulation | a material that reduces or prevents the transmission of heat or sound or electricity |
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| Meaning | A material that reduces or prevents the transmission of heat or sound or electricity. | |
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| Synonyms | insulant, insulation | |
| Narrower | corkboard | A heat-insulating building material consisting of cork granules that are made into sheets by compressing and baking |
| lagging | Used to wrap around pipes or boilers or laid in attics to prevent loss of heat / heat | |
| Broader | building material | material used for constructing buildings |