回かい転てん半はん径けいMeaningsNoun1. radius of gyrationKanji used回going around転roll around半half径diameterPitch accentかいてんはんけいComposed of回かい転てんrotation; revolution; turn; spin; working (e.g. of one's mind); function; turnover (of goods, funds, etc.); circulation; flow (of customers); curl; …Noun半はん径けいradiusNoun