Oxford Dictionary English autism nounnoun BrE BrE//ˈɔːtɪzəm// ; NAmE NAmE//ˈɔːtɪzəm// [uncountable] Mental and emotional problems Add to my wordlistjump to other resultsa mental condition in which a person finds it very difficult to communicate or form relationships with others Wordfinderconditionanorexia, autism, bipolar disorder, condition, dementia, depression, mentally, paranoia, psychosis, schizophrenia See related entries: Mental and emotional problems Word Originearly 20th cent.: from Greek autos ‘self’ + -ism.See autism in the Oxford Advanced American DictionaryCheck pronunciation: autism oxfordlearnersdictionaries.com