Answer: AEROGEL
AEROGEL is a crossword puzzle answer that we have spotted 4 times.
Referring Clues:
- Superlight porous solid
- Skylight insulation material, perhaps
- Extremely lightweight material
- Synthetic material also called frozen smoke
Last Seen In:
- New York Times - August 21, 2021
- Universal - July 22, 2019
- LA Times - February 08, 2014
- King Syndicate - Premier Sunday - May 31, 2009
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