Definition of megaparsec
: a unit of measure for distances in intergalactic space equal to one million parsecs
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Recent Examples of megaparsec from the Web
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According to the cosmic ladder, the universe is expanding at a rate of 73.24km per second per megaparsec.
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According to supernovae and Cepheids, the universe is expanding at a rate of 73.5 kilometers per second per megaparsec (about 3.3 million light-years).
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Origin and Etymology of megaparsec
International Scientific Vocabulary
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See words that rhyme with megaparsec Britannica.com: Encyclopedia article about megaparsec
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