noun
: the naturally occurring growth hormone of humans or a genetically engineered form that is used to treat children with growth hormone deficiencies and has been used especially by athletes to increase muscle mass
noun
: the naturally occurring growth hormone of humans or a genetically engineered form that is used to treat children with growth hormone deficiencies and has been used especially by athletes to increase muscle mass
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012