auto-
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auto-
(word root) selfExamples of words with the root auto-: autobiography, autograph
auto-
or aut-pref.
1. Self; same: autogamy.
2. Automatic: autopilot.
[Greek, from autos, self.]
auto-
or sometimes before a vowelaut-
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.