螺旋階段

Reading

Kana: らせんかいだん

Romaji: rasenkaidan

Definition

noun

1

spiral staircase

Kanji

螺

Readings: ラ、 にし、 にな

Meanings: small, edible, helical fresh-water mollusk

旋

Reading: セン

Meanings: rotation, go around

階

Readings: カイ、 きざはし

Meanings: storey, stair, counter for storeys of a building

段

Readings: ダン、 タン

Meanings: grade, steps, stairs