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3 definitions found
 for parsec
From 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.]
     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.

From WordNet (r) 3.0 (2006) :

      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]

From The Free On-line Dictionary of Computing (30 December 2018) :

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

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