Free dictionary online: translation in English, Spanish, French, Italian, Chinese, Russian, definitions, synonyms...
Results found in several dictionaries: Collins, Medical, Collaborative Dictionary
autiste 
  adj autistic
  nmf autistic person

autiste 
1  n 
a m autistic
b f autistic
2  a autistic

Collaborative Dictionary     French-English
autiste n. 1) autistic (m), 2) autistic (f) Reverso General Dictionary 
autiste exp. autistic Reverso General Dictionary 
autistes n. 1) autistics (pl.m.), 2) autistics (pl.f.) Reverso General Dictionary 

"Collins English French Electronic Dictionary © HarperCollins Publishers 2005"