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Carnivore Definition & Meaning - Merriam-Webster

A carnivore /ˈkɑːrnɪvɔːr/, or meat-eater (Latin, caro, genitive carnis, meaning meat or "flesh" and vorare meaning "to devour"), is an animal or plant whose nutrition and energy requirements are met by consumption of animal tissues (mainly muscle, fat and other soft tissues) as food, whether through predation or scavenging.  Borrowed from French carnivore, from Latin carnivorus. In the zoological sense, coined by William Whewell in 1840 as an adaptation of Cuvier's coinage, French carnivore.  

Animals that get 70 percent or more of their nutrition from meat are called obligate carnivores or hypercarnivores. Animals whose diet consists of about 50 percent meat are called mesocarnivores. Animals whose diet is only about 30 percent meat are called hypocarnivores.

The word carnivore was first used in English in the 1850s. The earliest known use of the word was in 1854, in the writings of Richard Owen, a comparative anatomist and paleontologist.