Hedron
/ˈhiː.drɒn/noun
A geometric face or a solid figure with a specified number of faces, especially in compounds like tetrahedron.
Did you know?Hedron comes from Greek hedra, meaning a seat or base, the same root behind words for sitting and even the “faces” of polyhedra.
Etymological Timeline
Ancient Greek
Greek
hedra
“a seat, chair, base, or foundation”
Late Greek
Greek
-hedron
“a geometric face or base, used in names of solids”
19th Century
English
-hedron
“a suffix in mathematical terms for polyhedral faces and solids”
Modern English
English
hedron
“a face or solid in geometry, chiefly in compounds”