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] Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014 au•to
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