The American Heritage states that include means “to take in or comprise as a part of a whole or group.” Likewise Merriam-Webster's emphasizes that “Include suggests the containment of something as a constituent, component, or subordinate part of a larger whole.”

Does include mean in addition to?

include Add to list Share. The verb include means to consider as a part of something. ... The verb include also means adding something (or someone) to a category or group. Once you try bungee jumping, you might want to include, or add, that to your list of favorite things.

How do you use include?

to contain something as a part of something else, or to make something part of something else: The bill includes tax and service. Tax and service are included in the bill. [ + -ing verb ] Your responsibilities will include making appointments on my behalf.