出典:Wiktionary
First English attestation dates to 1848, according to Merriam-Webster. From vegetarian + -ism. [1]
Vegetarianism (usually uncountable, 複数形 Vegetarianisms)
出典:Wikipedia
出典:『Wikipedia』 (2011/08/01 14:40 UTC 版)
Vegetarianism encompasses the practice of following plant-based diets (fruits, vegetables, etc.), with or without the inclusion of dairy products or eggs, and with the exclusion of meat (red meat, poultry, and seafood). Abstention from by-products of animal slaughter, such as animal-derived rennet and gelatin, may also be practiced.