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real
acrostichum aureum
ejection seat
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cursive
4.5-inch beach barrage rocket
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acoustical
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midst
let out
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concave polyhedron
concave polyhedron
/ˈkɒnˈkeɪv ˌpɒlɪˈhiːdrən/
noun
A polyhedron some of whose plane sections are concave polygons
(
concave polyhedron
)
a polyhedron some of whose plane sections are concave polygons
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