Vegetarian
From Memory Alpha, the free Star Trek reference.
A vegetarian is an individual who voluntarily excludes any meat-based foods from their diets (not to be confused with herbivores, whose natural diet consists solely of plant-based foods).
Most Vulcans are vegetarians (TOS: "All Our Yesterdays"; ENT: "Broken Bow"), though one major exception are the v'tosh ka'tur. (ENT: "Fusion")
