Asperger's syndrome

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A pervasive developmental disorder, usually of childhood, characterized by impairment in social interactions and repetitive behavior patterns.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable, neurology An autism-related developmental disorder characterised by sustained impairment in social interaction and nonverbal communication and by restricted, repetitive, pedantic and stereotyped activities, interests, speech and routines.
• noun countable A person diagnosed with Asperger's syndrome.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a psychiatric disorder usually noted during early school years; characterized by impaired social relations and by repetitive patterns of behavior