螺ら旋せんTop 25000MeaningsNoun1. spiral; helix2. screwOther spellingsらせん30%Kanji used螺spiral旋swirlPitch accentらせんUsed in vocabulary二に重じゅう螺ら旋せんdouble helix (structure of DNA)Noun螺ら旋せん階かい段だんspiral staircaseNoun螺ら旋せん状じょうhelical; spiral-shapedNoun螺ら旋せん推すい進しん器きscrew propellerNoun螺ら旋せん水みず揚あげ機きscrew pumpNoun超ちょうらせんsuperhelix; supercoilNoun螺ら旋せん体たいspiral; helicoid; helixNoun