Chinese

Noun

螺旋

1. helix, spiral

Japanese

Etymology

Sinitic. Date of borrowing unknown. Compare modern Chinese 螺旋 ‎(luóxuán).

Pronunciation

• On'yomi
• IPA^(key): [ɺ̠a̠sẽ̞ɴ]
• らせん [ɺ̠a̠˨ sẽ̞ɴ˦] (Heiban)^[1]

Noun

螺旋 ‎(hiragana らせん, romaji rasen)

1. a helix, a spiral
2. a ****

Derived terms

• 螺旋階段 (らせんかいだん) ‎(rasen kaidan): a spiral staircase
• 螺旋形 (らせんけい) ‎(rasenkei): a helix or spiral shape
• 螺旋状 (らせんじょう) ‎(rasenjō): a helix or spiral shape
• 螺旋状菌 (らせんじょうきん) ‎(rasenjō kin): a spirillum (a spiral-shaped bacterium)
• 螺旋推進機 (らせんすいしんき) ‎(rasen suishinki): a **** (as for a ship or boat; obsolete, replaced by propellers)
• 螺旋水揚機 (らせんみずあげき) ‎(rasen mizu-age ki): an Archimedes ****, a ****-shaped water pump

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