aero-gel

aerogel

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

Origin:
1920–25; aero- + gel

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Collins
World English Dictionary
aerogel (ˈɛərəˌdʒɛl)
 
n
a colloid that has a continuous solid phase containing dispersed gas

Collins English Dictionary - Complete & Unabridged 10th Edition
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