Dictionary.com
Thesaurus.com
Showing results for megaparsec. Search instead for Rime+Sparse.

megaparsec

American  
[meg-uh-pahr-sek] / ˈmɛg əˌpɑr sɛk /

noun

Astronomy.
  1. one million parsecs.


megaparsec Scientific  
/ mĕgə-pär′sĕk /
  1. One million parsecs.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Observations of the local Universe consistently point to a faster expansion rate of about 73 kilometers per second per megaparsec.

From Science Daily • Apr. 12, 2026

That mpc is what's known as a megaparsec, roughly 3,260,000 light years.

From Salon • Dec. 9, 2024

In their analysis, H0 comes out to be 73.04 ± 1.04 kilometers per second per megaparsec.

From Scientific American • Apr. 18, 2022

We determine the Hubble constant to be about 70 kilometres per second per megaparsec.

From Nature • Oct. 15, 2017

Thus when astronomers refer to a Hubble constant of 50, what they really mean is "50 kilometers per second per megaparsec."

From "A Short History of Nearly Everything" by Bill Bryson

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "megaparsec" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com