Plant-based eating does not have a set definition, even among nutrition professionals. A literal definition for a plant-based diet is simply a diet with a foundation in foods made from plants. This does not exclude meat, fish, poultry, all of which can be included in plant-based meals. It just means that plants take the most emphasis in meal planning and animal foods take less prominence. MyPlate guidelines, included in the 2015-2020 Dietary Guidelines for Americans, suggests that every meal should include three-quarters plant-based choices and one-quarter animal-based options.
Fruits, vegetables, beans, grains and nuts are the plants of the earth and can meet all your nutritional needs. If you want to emphasis these foods in your meals but still want to enjoy some meat, fish, or poultry, you can still consider yourself a plant-based eater. The beauty of a plant-centered diet is that you can individualize it to meet your needs and likes.