- Word History, Word Explorer
|part of speech:
||a large, nonluminous celestial body, esp. one of the nine in the solar system, that revolves around a star and often has one or more satellites.
- similar words:
||in astrology, any celestial body believed to influence human lives.
The word planet
entered English eight hundred years ago, during the Middle Ages. "Planet" comes from the ancient Greek term asteres planetai
or "wandering stars." In 1640, astronomers began using the word "planet" in its modern sense of a body that circles a star (the sun).