auto-


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auto-

or aut-
pref.
1. Self; same: autogamy.
2. Automatic: autopilot.

[Greek, from autos, self.]

auto-

or sometimes before a vowel

aut-

combining form
1. self; same; of or by the same one: autobiography.
2. acting from or occurring within; self-caused: autohypnosis.
3. self-propelling; automatic: automobile.
[from Greek autos self]

au•to

(ˈɔ toʊ)

n., pl. -tos.
an automobile.
[1895–1900, Amer.]

auto-1


,
a combining form meaning “self,” “same,”: autograph. Also, esp. before a vowel,aut-.
[< Greek, comb. form of autós self]

auto-2


,
a combining form representing automobile: automotive.

auto-3


,
a combining form representing automatic: autofocus.

auto.

1. automatic.
2. automobile.
3. automotive.

auto-

A prefix meaning "oneself," as in autoimmune, producing antibodies or immunity against oneself. It also means "by itself, automatic," as in autonomic, governing by itself.
Translations

auto-

prefauto-, Auto-

auto-

(oːtəu) prefix
1. for or by oneself or itself.
2. Same as auto.