noun
: the hyperbolic function that is analogous to the cosine and defined by the equation cosh x = (e x + e -x )/2 — abbreviation cosh
noun
: the hyperbolic function that is analogous to the cosine and defined by the equation cosh x = (e x + e -x )/2 — abbreviation cosh
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012