Meaning of AUTO- in English
a combining form meaning "self," "same," "spontaneous," used in the formation of compound words: autograph. Also, esp. before a vowel, aut- .
[ autós self ]
a combining form representing automobile in compound words: autocade.
[ see AUTO ]
a combining form representing automatic in compound words: autoalarm; autofeed; autofocus. Sometimes also taken as an adjective: auto enlarger; auto stop control.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012