What term refers to technical terminology used within specialized groups?

The term "jargon" specifically refers to the technical vocabulary or specialized terminology that is used by members of a particular profession, field, or group. It serves as a shorthand for more complex ideas and concepts, allowing those within the group to communicate effectively and efficiently about topics that might be confusing or opaque to outsiders. Jargon can streamline discussions among experts, enabling them to delve into detailed subjects without needing to explain each term.

Other terms, like euphemisms, slang, and colloquial language, have different functions. Euphemisms are used to soften or obscure meaning, often in sensitive contexts. Slang is informal language that frequently evolves and may not be understood widely, often associated with certain subcultures. Colloquial language refers to the everyday speech used by people in casual conversations, which can vary significantly by region and is not tied to any particular profession. Thus, "jargon" is the most accurate term for technical terminology employed within specialized groups.