pentachoron
English[edit]
Etymology[edit]
penta (“five”) + choron (“room”), from Ancient Greek πέντε (pénte, “five”) and χώρος (khṓros, “room”).
Noun[edit]
pentachoron (plural pentachorons or pentachora)
 (mathematics) A fourdimensional object equivalent to a tetrahedron, constructed out of five tetrahedra.
 2008, George Musser, The Complete Idiot's Guide to String Theory, page 174:
 A triangle becomes a tetrahedron (a type of pyramid), then a pentachoron (a hyperpyramid).
 2008, Prabhakar Gupta et al., Design and Analysis of Algorithms, page 356:
 Geometrically, K_{3} relates to a triangle, K_{4} a tetrahedron, K_{5} a pentachoron, etc.
 2013, Caspar Henderson, The Book of Barely Imagined Beings, page 7:
 The tetrahedron is a 3simplex whose 4simplex analog is the pentachoron, a fourdimensional body which can be orphographically ^{[sic]} projected onto a quincrux (as well as a pentagram and other shapes).
 2008, George Musser, The Complete Idiot's Guide to String Theory, page 174:
Synonyms[edit]
Translations[edit]
fourdimensional object

