Also means
insulator
Usage Note
Aislante functions both as an adjective (material aislante = insulating material) and as a noun (un aislante = an insulator). As a present participle form of aislar it is invariable for gender but adds -s in the plural (aislantes). It is used in electrical, thermal, and acoustic contexts (aislante térmico, aislante acústico).
Examples
"Pusieron un aislante en las paredes."
Natural Translation
They put insulation in the walls.
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