Maturation refers to the systematic physical growth of the body, including the nervous system; developmental changes in the body or behavior that associated with the biological process of aging. Maturation also refers to the developmental changes in the body or behavior that result from the aging process rather than from learning , injury, illness , or some other life experience. Maturation also refers to a change in behavior caused by physical or physiological development of the organism in the absence of experience with particular environmental events.
Other /More definition:
Maturation refers to the developmental changes associated with the biological process of aging; the developmental changes in the body or behavior that result from the aging process rather than from learning, injury, illness, or some other life experience.