周しゅう期き性せいMeaningsNoun1. periodicityNo-adjective2. periodic; cyclicKanji used周circumference期period (of time)性nature (of a person)Pitch accentしゅうきせいComposed of周しゅう期きcycle; periodNoun性せいnature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); -ty; -ity; -ness; -cyNoun