pársec 65
parsec or parsec . ( Of the ingl. )( parsec , acrón. of pair allax sec ond, Parallax second). 1. m. Astr. Astronomical length unit equal to the distance of a celestial body from which would be the semimajor axis of the orbit with an angle of one second of arc. It is equal to 3.26 light-years. (Símb.) pc ).