vegetarianism

n. practice of not eating meat or fish

This article refers to human nutrition and diet. For plant based diets in the animal kingdom see herbivore Vegetarianism is the practice of a diet that excludes all animal flesh, including poultry, game, fish, shellfish or crustacea, and slaughter by-products. There are variations that admit dairy products, eggs and/or products from animal labor such as honey.
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Vegetarianism is the voluntary abstinence from eating meat. Vegetarians refrain from eating meat for various reasons, [more]Vegetarianism - Community and Resources

Noun
1. a diet excluding all meat and fish
(hypernym) diet
(hyponym) macrobiotic diet

(n.)
The theory or practice of living upon vegetables and fruits.