In the late 1800 the word automobile was used for a new kind of vehicle that could move by itself without horses the word autopilot was invented in 1935 for a system that allows a vehicle to steer itself. Based on this information, what is most likely meaning of Greek word auto?

The most likely meaning of Greek word 'auto' is 'by itself.'

Explanation:

Prefix 'auto' means self-propelling - something that can move on its own power. As seen in this passage, word 'automobile' stands for a vehicle that can move all by itself. Similarly, 'autopilot' means that an aircraft can move without any human involvement. Some other words that contain this prefix are automotive, automatically, autofocus, etc.

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