the.com/auto

Short for automatic, autonomous, or automobile — context does the heavy lifting you refuse to.

means A clipped form used as a prefix or stand-alone word meaning 'self' — acting on its own, or, informally, a car.

from From Greek 'autos,' meaning 'self.' It arrived in English bolted onto other words — 'automaton' (self-moving thing), 'automatic,' 'autonomous' — and in the early 20th century, 'automobile' (self-moving vehicle) got so common that people just lopped off everything after 'auto' and let it stand alone for the car itself.

prefix origin
Greek autos, meaning self
lazy suffix
stands in for whole words since the 1900s
car shorthand
automobile shortened once driving got casual
tech usage
auto-save, auto-pilot, auto-correct all borrow it
the.com · every word