Chord voicing refers to the way notes of a chord are arranged. The most basic voicing of a chord is in it’s triad form in root position; root of the chord as the lowest note in the chord, then the 3rd of the chord, then the 5th. Any chord can be inverted, so the 1st inversion chord voicing would find the 3rd as the lowest note in the chord, then the 5th, followed by the root on top — one octave higher. The 2nd inversion of the chord would find the 5th as the lowest note, followed by the root, with the 3rd on top — one octave higher.