(1984) a violent US film, in which Arnold Schwarzenegger appears as an android (=a machine that looks exactly like a person) who is sent back from the future to kill a woman before she can give birth to a child who will become a great leader in the future. In a second film, Terminator II (1991), Schwarzenegger appears as another android, but this time he is a good character who wants to help the humans.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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