See also: PSC, and PSČ English Noun psc (plural psc) (astronomy, obsolete) Abbreviation of parsec. (geometry) Abbreviation of parallax second. Synonyms pc (the symbol for parsec) Derived terms kpsc (kiloparsec) Mpsc (megaparsec) Gpsc (gigaparsec) Anagrams CPS, CPs, CSP, PCS, PCs, SCP, SPC, cps, pcs, pcs.Wikiwand - on Seamless Wikipedia browsing. On steroids.