Noun
nestohedron (plural nestohedra)
(geometry) For a building set B, the Minkowski sum of the simplicies ΔS as S ranges over B. (Here ΔS is the standard simplex of S, i.e., the convex hull of the (nonzero endpoints of the) standard unit vectors ei for i in S.) Every nestohedron is a generalized permutahedron.