Kidney Treatment to Remove Uric Acid

This page is the CodyCross answer for the clue below from Trip to Spain, Group 854, Puzzle 1 (Guggenheim Museum).

Question is: Kidney Treatment to Remove Uric Acid

and the answer is: DIALYSIS

Word Meaning:

DIALYSIS — (chemistry) A method of separating molecules or particles of different sizes by differential diffusion through a semipermeable membrane.

Definitions from Wiktionary.