Usually means: Unit of astronomical distance measurement.
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We found 12 dictionaries that define the word megaparsec:

General (7 matching dictionaries)
  1. megaparsec: Merriam-Webster
  2. megaparsec: American Heritage Dictionary of the English Language
  3. megaparsec: Collins English Dictionary
  4. megaparsec: Wiktionary
  5. megaparsec: Dictionary.com
  6. Megaparsec: Wikipedia, the Free Encyclopedia
  7. megaparsec: TheFreeDictionary.com

Computing (1 matching dictionary)
  1. megaparsec: Encyclopedia

Science (3 matching dictionaries)
  1. Megaparsec: Extragalactic Astronomy
  2. How Many? A Dictionary of Units of Measurement (No longer online)
  3. MEGAPARSEC: Zoom Astronomy Glossary

Tech (1 matching dictionary)
  1. JPL Terms (No longer online)

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Definitions from Wiktionary (megaparsec)

▸ noun:  (astronomy) An astronomical unit of distance equal to 1 million parsecs.

Similar:
milliparsec, microparsec, attoparsec, milliarcsec, millarcsecond, milliarcsecond, petameter, microarcsecond, picosecond, picometre, more...

Opposite:
microscopic, nanoscopic, infinitesimal

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Similar:
milliparsec, microparsec, attoparsec, milliarcsec, millarcsecond, milliarcsecond, petameter, microarcsecond, picosecond, picometre, more...

Opposite:
microscopic, nanoscopic, infinitesimal



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