(えんしゅう)

えんしゅう
noun
circumference
1. circumference
The perimeter or boundary line of a circle.
円周(えんしゅう)(なが)(もと)める
Calculate the length of the circumference.
The circumference can be calculated by diameter × π.
地球(ちきゅう)円周(えんしゅう)(やく)4(まん)キロメートル
The Earth's circumference is about 40,000 kilometers.

円周(えんしゅう) refers to the circumference (perimeter) of a circle. A mathematical term commonly learned in school.

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