adjective

automatic

automatic, self-acting

This is an automatic door.

This is an automatic door.

Breathing is an automatic function of the body.

Breathing is an automatic function of the body.

((an automatic)) ((noun)) This car has an automatic transmission.

Synonyms: self-operating, mechanical; Antonyms: manual, conscious

From Greek 'automatos' meaning 'self-moving'. 'auto-' (self) + 'matos' (moving).

Think of an 'automobile', which moves by itself. The prefix 'auto-' means 'self'.

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