Simplify the following text for a Grade 10 native English-speaking person.
Original: In medicine , dialysis ( from Greek `` dialusis '' , meaning dissolution , `` dia '' , meaning through , and `` lysis '' , meaning loosening ) is primarily used to provide an artificial replacement for lost kidney function in people with renal failure .
Simplified: The word dialysis comes from the Greek word dialusis , dia meaning through , and lusis meaning loosening .