parsec

noun
par·​sec | \ ˈpär-ˌsek How to pronounce parsec (audio) \

Definition of parsec

: a unit of measure for interstellar space that is equal to 3.26 light-years and is the distance to an object having a parallax of one second as seen from points separated by one astronomical unit

Examples of parsec in a Sentence

Recent Examples on the Web

A parsec is a unit of distance, not time, so why would Solo use it to explain how quickly his ship could travel? Kyle Hill, WIRED, "How the Star Wars Kessel Run Turns Han Solo Into a Time-Traveler," 12 Feb. 2013

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'parsec.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of parsec

1913, in the meaning defined above

History and Etymology for parsec

parallax + second

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More from Merriam-Webster on parsec

Rhyming Dictionary: Words that rhyme with parsec

Britannica.com: Encyclopedia article about parsec

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