Home › Words › O › orthogoniumorthogoniumorthogonium means right-angled triangle.Among words judged in Lexicurio's Arena, orthogonium ranks #16,734 of 42,752 for Qualifying.EtymologyFrom Ancient Greek ὀρθογώνιος (orthogṓnios, “right-angled”).nounright-angled triangleDefinitions & examples from Wiktionary (CC BY-SA 3.0).Words closest in meaningBy meaning, not spelling — each word's AI semantic fingerprint, nearest first.orthogon 80% match — A right-angled triangle. vs orthogonium →oxygon 67% match — An acute triangle. vs orthogonium →antiorthic 62% match — perpendicular to an orthic axis vs orthogonium →amblygonal 62% match — obtuse-angled vs orthogonium →trirectangular 59% match — Having three right angles. vs orthogonium →isogon 59% match — An equiangular polygon. vs orthogonium →orthotomy 58% match — The property of cutting at right angles. vs orthogonium →orthohedron 57% match — A figure, somewhat like a cube but with two square faces and four rectangular faces vs orthogonium →