Oz is a two-letter, American informal proper noun referring to the Australian state or shorthand for 'Australia' as a friendly nickname, or a symbolic reference to the land of Oz from literature (the Wizard of Oz). It can also denote the abbreviation for the ounce in measurement contexts. In everyday use, it typically identifies Australia, a person’s nickname for Australia, or the mythical land in fiction. The term is brief, casual, and widely recognized in pop culture and travel talk.
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