DEF
Defense: Your defense rating against physical damage. It is shown as A + B in the stat window, where A is item-based DEF rate, and B is VIT-based DEF rate. The item-based DEF rate cuts damage by %, whereas VIT-based DEF rate is pure reduction with that number. Be aware that the status window does not accurately represent the DEF added by upgraded items. Each + on an upgraded item is shown in the status window as 1 item-based DEF, however damage is calculated with each + providing only 66% of 1 DEF (so 0.66 DEF). This means, if you have DEF listed as 10+5 and enemy just did initial damage worth 80, then you'll receive 67 damage.