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n. - A unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc.

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Usage examples (33)
  • A parsec is a unit of length in astronomy, approximately 3.262 light years in length.
  • A parsec is the distance equal to light traveling for 3.26 light years.
  • (A parsec is the average distance the Earth has from the Sun, 93 million miles).
  • A parsec is a measure of distance, not time.
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