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vegetarianism

[vej-i-tair-ee-uh-niz-uh m]
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noun
  1. the beliefs or practices of a vegetarian.
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Origin of vegetarianism

First recorded in 1850–55; vegetarian + -ism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for vegetarianism

vegetarianism

noun
  1. the principle or practice of excluding all meat and fish, and sometimes, in the case of vegans, all animal products (such as eggs, cheese, etc) from one's diet
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for vegetarianism

n.

1851, from vegetarian + -ism.

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Online Etymology Dictionary, © 2010 Douglas Harper

vegetarianism in Medicine

vegetarianism

(vĕj′ĭ-târē-ə-nĭz′əm)
n.
  1. The practice of subsisting on a diet composed primarily or wholly of vegetables, grains, fruits, nuts, and seeds, with or without eggs and dairy products.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.