- a unit of astronomical distance equal to the distance from earth at which stellar parallax would be 1 second of arc; equivalent to 3.0857 × 1016 m or 3.262 light years
| 单词 | parsec |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 par•sec (pär′sek′),USA pronunciation n. [Astron.]
Collins Concise English Dictionary © HarperCollins Publishers:: parsec /ˈpɑːˌsɛk/ n
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