| PdD abbr. Latin Pedagogiae Doctor (Doctor of Pedagogy) |
| PDD abbr. pervasive developmental disorder |
| pervasive developmental disorder n. Abbr. PDD Any of several disorders, such as autism and Asperger's syndrome, characterized by severe deficits in many areas of development, including social interaction and communication, or by the presence of repetitive, stereotyped behaviors. Such disorders are usually evident in the first years of life and are often associated with some degree of mental retardation. |
| PdD Latin Pedagogiae Doctor (Doctor of Pedagogy) |
PDD
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