圆周率 yuán zhōu lǜ

DEFINITIONS

  1. (math.) the ratio of the circumference of a circle to its diameter (π)

CHARACTERS

圆 yuán
HSK 5
circle; round, circular; complete
周 zhōu
HSK 3
Zhou dynasty; circumference
率 lǜ
HSK 5
to lead; ratio; rate; limit