American optionglossary / American option An option that can be exercised on any day, including its expiration date. — Also termed American-style option. Cf. European option. 词条贡献者 法律翻译王漾,在一家顶尖英国律师事务所的上海办公室担任全职法律翻译,专注翻译各类与大中华业务有关的法律文件。