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Definition of Developmental disability
1. Noun. describes life-long disabilities attributable to mental and/or physical, or combination of mental and physical impairments, manifested prior to age twenty-two. ¹
¹ Source: wiktionary.com
Medical Definition of Developmental disability
1. Loss of function brought on by prenatal and postnatal events in which the predominant disturbance is in the acquisition of cognitive, language, motor, or social skills; e.g., mental retardation, autistic disorder, learning disorder, and attention-deficit hyperactivity disorder. (05 Mar 2000)