Japanese

Noun

同心円 ‎(hiragana どうしんえん, romaji dōshin'en)

1. concentric circles

References

1. ↑ 1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, ISBN 978-4-14-011112-3