Definition of Developmental delay

Developmental delay: A condition in which a child is behind schedule in reaching milestones of early childhood development. This term is often used as a euphemism for mental retardation, which can be less a delay than a permanent limitation of a child's ability to progress.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=2965
Last Editorial Review: 3/19/2012