noun: (biology) the process of an individual organism growing organically; a purely biological unfolding of events involved in an organism changing gradually from a simple to a more complex level
noun: a progression from simpler to more complex forms
Example: "The growth of culture"
noun: (pathology) an abnormal proliferation of tissue (as in a tumor)
noun: the gradual beginning or coming forth
noun: a process of becoming larger or longer or more numerous or more important