Denshi Jisho — Online Japanese dictionary

一周 いっしゅう once around; a revolution; a lap; a turn; a round; one full year
Common word, Noun, Suru verb 
一周 ひとめぐり once around; a revolution; a lap; a turn; a round; one full year
Noun, Suru verb 
一周 いっしゅうき first anniversary of death
Noun 
一周 いっしゅうき period (in astronomy)
Noun 
一周 いっしゅうねん one full year
Common word, Noun 

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