major arc; superior arc
Geometry term for the larger of the two arcs formed when a circle is divided by two points. Contrasts with 劣弧 (minor arc).
円周上の二点を結ぶ弧のうち、長い方を優弧という。
Of the two arcs connecting two points on a circle, the longer one is called a major arc.
A circle can be divided into a major arc and a minor arc by two points.
優弧 is the larger arc formed by two points on a circle, while 劣弧 is the smaller, complementary arc.
From 優 (superior, greater) + 弧 (arc). A technical term formed from kanji components.