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Pronunciation varies by accent · noun
(geometry) a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids..
Use octahedron when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Octahedron means (geometry) a polyhedron with eight faces; the regular octahedron has regular triangles as faces and is one of the Platonic solids..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use octahedron where its definition matches the intended context.
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