English
pseudotriangle
From pseudo- + triangle.
Today it means
noun Any subset of a plane that lies between any three mutually tangent convex sets
Sources
Sources: Wiktionary, “pseudotriangle”. 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 / pseudotriangle