# parsec

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## par·sec

(pär′sĕk′)
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.

## parsec

(ˈpɑːˌsɛk)
n
(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.

## 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.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 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 yearssecparastronomy unit - a linear unit used for astronomical distances
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
Parsec

## parsec

[ˈpɑːsek] N
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
References in periodicals archive ?
"The latest event, provisionally labeled #S190426c, appears to have occurred around 375 megaparsecs (1.2 billion light-years) away, the LIGO6Virgo team calculated," Davide Castelvecchi, a reporter at the (https://www.nature.com/articles/d41586-019-01377-2) journal Nature , said.
It is believed that the upper limit of cosmic-ray energy is limited by a threshold of 5 x [10.sup.19] eV, because cosmic ray particles interact energetically with relic radiation, which leads to their absorption and reduction of their energy to a threshold value at distances of the order of several tens of megaparsecs (Greisen-Zatsepin-Kuzmin effect) [2,3].
Since on scales larger than about 100 Megaparsecs, cosmos is homogeneous and isotropic [1], the FRW metric is a suitable metric to study the cosmic evolution [1].
The discovery is part of the D<40 Mpc Survey, which observes galaxies within a distance of 40 megaparsecs (Mpc), or 130 million light-years, every night down to a limit of about magnitude 19.
"But even with steel suspensions we might detect a gravitational wave coming from a merger of two neutron stars up to 50 megaparsecs (163 million light-years) from earth.
Vacios gigantescos, que van de la decena a la centena de megaparsecs, se encuentran pues rodeados por las galaxias, que se van aglutinando en grupos y conglomerados: todo llega a constituir una estructura que se define bien 'en forma de colmena', o bien como algo 'espumoso', 'esponjoso', o en forma de 'queso suizo'.
Recently reported distances range from 4 to 29 megaparsecs, but using this new method the researchers calculated the distance of 19 megaparsecs to the supermassive black hole.

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