østrogen

== Norwegian Bokmål == === Etymology === From Ancient Greek οἶστρος (oîstros) +‎ -gen. === Noun === østrogen n (definite singular østrogenet, indefinite plural østrogen or østrogener, definite plural østrogena or østrogenene) oestrogen (UK) or estrogen (US) === References === “østrogen” in The Bokmål Dictionary. == Norwegian Nynorsk == === Etymology === From Ancient Greek οἶστρος (oîstros) +‎ -gen. === Noun === østrogen n (definite singular østrogenet, indefinite plural østrogen, definite plural østrogena) oestrogen (UK) or estrogen (US) === References === “østrogen” in The Nynorsk Dictionary.