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aero·shell | \ ¦er-ō-¦shel 
\
\ plural aeroshells
Definition of aeroshell
: heat shield One such system, the Viking-era 70° sphere cone aeroshell, has been used on every U.S. mission to the surface of Mars.— Donald Rapp, Human Missions to Mars, 2007
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Merriam-Webster unabridgedWords at Play
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Time Traveler for aeroshell
The first known use of aeroshell was in 1966
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