There are many factors that constitute being an adult. An adult is much more than turning the age of 18. The definition in the dictionary states an adult means being completely grown: fully developed and mature. I think there is much more that defines an adult. In the United States an adult is considered to be someone who takes responsibility for themselves and their actions. An adult has stability in their life and is able to take care of themselves physically, mentally, financially and emotionally. In other countries and cultures their definition of an adult differs. Adults are unique in many ways. Every person is an entity having their own identity, thought process, and way they see things.