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Parsec

see synonyms of parsec

Noun

1. parsec, secpar

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

WordNet Lexical Database for English. Princeton University. 2010.

Parsec

see synonyms of parsec
noun
a unit of astronomical distance equal to the distance from earth at which stellar parallax would be 1 second of arc; equivalent to 3.0857 × 1016 m or 3.262 light years

Collins English Dictionary. Copyright © HarperCollins Publishers

Parsec

see synonyms of parsec
noun
a unit of distance, usually used to measure the distance to a star, equal to 206,265 astronomical units (3.0857 x 1013 kilometers or 1.92 x 1013 miles or 3.2616 light years): it is the distance at which an angle of 0° 0′ 1″ (one second of arc) would form a triangle having an opposite side with a length of one astronomical unit
abbrev. pc

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Parsec

see synonyms of parsec
n.
A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.086 × 1013 kilometers, or 1.918 × 1013 miles.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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