円周 えんしゅう Meanings Noun, の-adjective circumference Kanji 円 circle. Read as エン. 周 around. Read as シュウ. Words containing 円周 円周率 (えんしゅうりつ) pi (3.1415926...) 円周角 (えんしゅうかく) angle at the circumference Word lists JLPT N2 Jinuma: Japanese Dictionary · Word lists