parsec

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par·sec

(pär′sĕk′)

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.

[par(allax) + sec(ond).]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

parsec

(ˈpɑːˌsɛk)

(Units) 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

[C20: from parallax + second²]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

par•sec

(ˈpɑrˌsɛk)

n.

a unit of distance equal to 206,265 times the distance from the earth to the sun, or 3.26 light years.

[1910–15; par (allax) + sec (ond)²]

par·sec

(pär′sĕk′)

A unit of astronomical length equal to 3.26 light-years. It is based on the distance from Earth at which a star would have a parallax of one second of arc.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

parsec

1. (pc) The distance at which 1 au would measure 1 sec of arc, equal to 19.16 trillion mi (30.857 trillion km) or 206,265 au or 3.26 ly (1).

2. (pc) A unit of length used for measuring astronomical distances. 1 parsec = 3.26 light years.

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Noun

parsec - 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

secpar

astronomy unit - a linear unit used for astronomical distances

Translations

Parsec

parsec

парсек

parsec

[ˈpɑːsek] N → parsec m

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

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