The terminology stems from the Latin lac meaning "milk" (as in 'lactation'), ovum meaning "egg", and the English term vegetarian (see Etymology of vegetarianism for the etymology of "vegetarian"), so as giving the definition of a vegetarian diet containing milk and eggs.
In the Western World, lacto-ovo vegetarians are the most common type of vegetarian. Generally speaking, when one uses the term vegetarian a lacto-ovo vegetarian is assumed. Lacto-ovo vegetarians are often well-catered to in restaurants and shops, especially in some parts of Europe and metropolitan cities in North America. In the airline industry, a lacto-ovo vegetarian meal is known by the acronym VLML (for Vegetarian, Lacto-ovo MeaL).
The Bible Christian Church was a Christian vegetarian sect founded by William Cowherd in 1809. Cowherd was one of the philosophical forerunners of the Vegetarian Society founded in 1847. The Bible Christian Church promoted the use of eggs, dairy and honey as God’s given food per "the promised land flowing with milk and honey" (Exodus 3:8).
- "Top 7 Types of Vegetarians".
- "Vegetarian (Lacto-ovo vegetarian)".
- Julia Twigg (1981). "The Bible Christian Church". International Vegetarian Union.
- John Davis. "A History of Veganism from 1806". International Vegetarian Union.
- "''A Position Statement on The Vegetarian Diet Adapted from the General Conference of Seventh-day Adventists Nutrition Council''". SDADA. Retrieved 2011-10-03.