Search Result for "parsec": 
Wordnet 3.0

NOUN (1)

1. 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: parsec, secpar]


The Collaborative International Dictionary of English v.0.48:

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 (r) 3.0 (2006):

parsec n 1: 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: parsec, secpar]
The Free On-line Dictionary of Computing (30 December 2018):

PARSEC An extensible language with PL/I-like syntax, derived from PROTEUS. ["PARSEC User's Manual", Bolt Beranek & Newman, Dec 1972]. (2009-06-26)