aerogels

/ˈɛroʊˌdʒɛlz/
noun
  1. Plural form of aerogel; multiple types or pieces of this ultra-light, porous solid material.
    • The lab produced several aerogels with varying densities for testing.
    • Different aerogels can be made from silica, carbon, or metal oxides.
    • Aerogels are used in everything from space suits to tennis rackets.
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