Definition of "auto-" in English

prefix

1. Reflexive, regarding or to oneself.

   • auto- + biography → autobiography
   • auto- + erotic → autoerotic

prefix

1. Automatic.

   • auto- + focus → autofocus
   • auto- + loader → autoloader
   • auto- + walk → autowalk

prefix

1. Self-propelled.

   • auto- + cab → autocab
   • auto- + car → autocar

2. Relating to cars or the driving of cars.

   • auto- + cross → autocross
   • auto- + -phile → autophile