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Dictionary Results For "parsec" [?]/[OPML]
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English

Etymology

Contraction of parallax second.

Noun

  1. parallax second|Parallax second.


Translations


See also


Category:Astronomy

fr:parsec gl:parsec io:parsec pl:parsec ru:parsec sv:parsec ta:parsec vi:parsec zh:parsec

GNU Project's publication of CIDE, the Collaborative International Dictionary of English parsec \par"sec\ (p[aum]r"s[e^]k), n. [From parallax second. See
parallax second and annual parallax, under parallax.]
(Astron.)
A unit of length used in describing astronomical distances,
equal to 3.26 light years, or 3.086 x 1013 km. Abbreviated
pc. The derived units of kiloparsec (kpc, 1000 parsecs) and
megaparsec (mpc, one million parsecs) are often found in
discussion of astronomical distances.
[PJC]
WordNet parsec
n : 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 [syn: secpar]
FOLDOC PARSEC

Extensible language with PL/I-like syntax, derived from
PROTEUS. "PARSEC User's Manual", Bolt Beranek & Newman (Dec
1972).


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