From perisseuo; a surplus, or superabundance -- abundance, that was left, over and above.
see GREEK perisseuo
1. abundance, in which one delights; opposed to ὑστέρημα, 2 Corinthians 8:14 (13), 14; tropically, of that which fills the heart, Matthew 12:34; Luke 6:45, (Eratosthenes, Plutarch).
2. what is left over, residue, remains: plural Mark 8:8.