also: おうぎじょう
noun, noun which may take the genitive case particle 'no'
fan-shaped; fan form
Describes something that spreads out like a folding fan. Often used in geographical or descriptive contexts.
扇状の地形が広がっている。
A fan-shaped landform spreads out.
川が扇状に流れている。
The river flows in a fan shape.
扇形 is more common for 'fan shape' in everyday contexts; 扇状 is slightly more technical or formal.
Compound of 扇 (fan) and 状 (shape/form). The reading せんじょう uses the on'yomi of both kanji, while おうぎじょう uses the kun'yomi of 扇.