hyperbolic cosine

Noun

 * 1)  a hyperbolic function that is written in symbol cosh and defined as the following: $$\cosh(x) = \tfrac 1 2 (e^x + e^{-x})$$

Translations

 * Finnish: hyperbolinen kosini
 * French: cosinus hyperbolique
 * Icelandic: breiðbogakósínus
 * Japanese: ハイパボリックコサイン, 双曲余弦
 * Polish: cosinus hiperboliczny
 * Russian: гиперболи́ческий ко́синус
 * Swedish: cosinus hyperbolicus