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Word | Parsec |
Italian Meaning | parsec |
a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years / a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc / a unit of distance used in astronomy, equal to about 3.26 light years (3.086 × 10 13 kilometers). One parsec corresponds to the distance at which the mean radius of the earth's orbit subtends an angle of one second of arc., | |
Usage | ⇒ But cosmologists are so comfortable with millions and billions that none of them feel the urge to invent a unit much beyond the light-year or the parsec . |
Synonyms | astronomical unit, light-year, secpar, chaos, kilometer, kilometre, measure, outer space, space, astronomical distance, astronomy unit, |
Antonyms | |
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