aut-
Multiple Entries:aut- auto-
Concise Oxford English Dictionary © 2008 Oxford University Press:
aut-
▶prefix variant spelling of auto-1.
Concise Oxford English Dictionary © 2008 Oxford University Press:
auto-1 (usu. aut- before a vowel)
▶combining form
- 1 self: autocrat.
- 2 one's own: autograph.
- 3 automatic; spontaneous: autoxidation.
– origin from Gk autos ‘self’.
Concise Oxford English Dictionary © 2008 Oxford University Press:
auto-2
▶combining form relating to cars: autocross.
'aut-' also found in these Oxford entries:

