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1.
1. Plant-based;
2. A diet devoid of animal products such as meat, poultry, seafood, eggs or dairy products: a vegetan diet.
She eats a vegetan diet, but does not necessarily embrace vegan philosophy.

Vegetan simply refers to what you eat, and does not signify any "whys" which may motivate someone to eat that way.

Some vegans resent another person calling himself "vegan" when he eats a "vegan diet" but does not embrace all the values, philosophies and precepts of veganism, while at the same time "vegetan" is a useful word for people who don't want to wear a label - they just want to eat a certain way and not have their diet define how they describe themselves.
by Anonymous July 28, 2003