Final answer:
Urolithiasis is the disorder that refers to a "kidney stone" formed when uric acid and calcium salts from the urine clump together.
Step-by-step explanation:
The disorder that refers to a "kidney stone" formed when uric acid and calcium salts from the urine clump together is Urolithiasis. Urolithiasis is the term used to describe the presence of stones in the urinary tract. In this case, the stones are formed from a combination of uric acid and calcium salts.