Related Searches
on Ask.com
Browse Nearby Entries
parsec
7 dictionary results for: PARSEC
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
par·sec 
[pahr-sek] Pronunciation Key
[pahr-sek] Pronunciation Key –noun Astronomy.
| a unit of distance equal to that required to cause a heliocentric parallax of one second of an arc, equivalent to 206,265 times the distance from the earth to the sun, or 3.26 light-years. |
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
American Heritage Dictionary - Cite This Source - Share This
| par·sec
(pär'sěk') Pronunciation Key
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. [par(allax) + sec(ond)1.] |
(Download Now or Buy the Book)
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Online Etymology Dictionary - Cite This Source - Share This
parsec
parsec
1913, from par(allax) sec(ond). It is the distance at which an object has parallax (viewed from Earth) of one second of arc, or about 3.26 light years.
Online Etymology Dictionary, © 2001 Douglas Harper
WordNet - Cite This Source - Share This
| parsec | |
noun | |
| 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® 3.0, © 2006 by Princeton University.
The American Heritage Science Dictionary - Cite This Source - Share This
| parsec
(pär'sěk') Pronunciation Key
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. Its metric equivalent is about 30.8 trillion km (19.1 trillion mi). It is used in measuring distances in interstellar and intergalactic space. The closest star to Earth, Alpha Centauri, is about 1.3 parsecs away. Compare astronomical unit, light-year. |
The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Free On-line Dictionary of Computing - Cite This Source - Share This
PARSEC
Extensible language with PL/I-like syntax, derived from PROTEUS. "PARSEC User's Manual", Bolt Beranek & Newman (Dec 1972).
The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
American Heritage Abbreviations Dictionary 3rd Edition - Cite This Source - Share This
| parsec parallax second |
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Share This:
Copyright © 2008, Dictionary.com, LLC. All rights reserved.