noun, noun which may take the genitive case particle 'no'
Refers to a shape that is longer than it is wide, like an ellipse or an oval. Often used in geometry or to describe objects with a rounded, elongated form. Compare with 楕円形, which is more strictly mathematical.
See also: 楕円形
このテーブルは長円形をしている。
This table has an oval shape.
An oval face is characteristic.
Compound of 長 (long) + 円形 (circular shape), literally 'long circular shape'. The exact historical derivation is uncertain, but the term naturally describes an elongated round form.