Alter Aeon Online Help

Keywords are:  'absorbfire absorbice absorbzap absorbmagic'

The various 'absorb' effects are one way to reduce the amount of elemental
or magical damage that you may take.  An item with absorb on it has a
chance to absorb elemental or magical damage and convert it into mana for
you to use.

With enough absorption equipment, you may find that you gain mana for
healing faster than you take damage.