noun Chemistry.
a gel formed by the dispersion of air in a solidified matrix; a solid foam, as Styrofoam.

1920–25; aero- + gel Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
aerogel (ˈɛərəˌdʒɛl)
a colloid that has a continuous solid phase containing dispersed gas

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The highly porous nature of an aerogel structure provides a huge amount of surface area per unit weight.
However, this doping process can be challenging because of aerogel's complex pore structure.
Methods of producing aerogel-based composite materials via chemical vapor infiltration methods.
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