What term refers to a person who abstains from eating meat, fish, or poultry?

The term that refers to a person who abstains from eating meat, fish, or poultry is "vegetarian." This classification encompasses individuals who choose not to consume these animal products for various reasons, including ethical, environmental, or health considerations. Vegetarians may still consume other animal products such as dairy and eggs, depending on their specific dietary choices (e.g., lacto-vegetarian, ovo-vegetarian).

The other terms do not apply to this definition: "meat analog" refers to products designed to mimic the taste and texture of meat but are made from plant ingredients, "pareve" pertains to foods that are neutral in kosher dietary laws—neither meat nor dairy—and does not imply a personal dietary choice, while "lactose intolerance" describes a condition where individuals have difficulty digesting lactose, a sugar found in milk, and does not relate to meat consumption. Thus, "vegetarian" is the most accurate term for someone who abstains from eating meat, fish, or poultry.