双曲余弦 shuāng qū yú xián

DEFINITIONS

  1. hyperbolic cosine or cosh (math.)

CHARACTERS

双 shuāng
HSK 3
set of two, pair, couple; both
曲 qū
HSK 6
crooked, bent; wrong, false
余 yú
HSK 5
I, my, me; surname; surplus
弦 xián
HSK 6
string; hypotenuse, crescent