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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

A group of extremely light and porous solid materials. The lightest is less than four times as dense as dry air.

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Usage examples (34)
  • Silica aerogel is the most common type of aerogel and the most extensively studied and used.
  • This opened an completely new area in aerogel research.
  • It's made of aerogel, which is the lightest substance that we know of.
  • Oh-at the Museum in San Jose there was a pile of this stuff called aerogel-solid, yet almost entirely air.
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