Etymograph

English

subsimplex

From sub- + simplex.

Formed from sub- + simplex

Proto-Indo-European *upó ‘up; from below’

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Proto-Indo-European *sm̥- ‘one’

Latin simplex ‘plain, simple’

English simplex

Today it means

noun A polyhedron at the intersection of simplexes.

Sources

Sources: Wiktionary, “subsimplex”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / subsimplex