the most extreme kind of vegetarian, one who will eat no meat or animal product, including dairy products or eggs. Most will not use animal products of any sort, such as leather. An increasing number of lesbians are vegetarian and vegan.
The most extreme category of vegetarian. One who not only shuns beef, pork, poultry, mutton, eggs, dairy, honey, and gelatin -- but also refuses to buy or use leather, wool, silk, fur, or any other animal-derived product.
More restrictive than a vegetarian diet, which excludes only meat, a vegan diet excludes dairy products as well. Pregnant women wishing to follow a vegan diet should seek the help of a dietitian to make sure their nutritional needs are met.
A strict vegetarian who consumes no animal food or dairy products. Veganism usually also excludes honey and the wearing and use of animal products (leather, silk, wool, lanolin, gelatin...). A "dietary vegan" is one who follows a vegan diet, but may use non-food animal products.
Artist Trenton Doyle Hancock uses the word vegan to refer to fictional creatures responsible for the death of The Legend, the oldest of a plant-like species known as mounds. The concept of a vegan is based largely on the more common usage of the word (see Vegan). However, in Hancock's language, a vegan is not a person who doesn't eat meat; rather, such a person is a "vegan vessel", the victim of a vegan that has taken residence in his stomach.