Overview. Kidney stones are also known as calculi (plural), or calculus (singular). When it is in the kidney, it is a renal calculus. The tube draining the kidney to the bladder is the ureter, and a stone in the ureter is a ureteral calculus. It is estimated that 20% of us will have a kidney stone in our lifetime.
âIt wasn't long ago that sprayers were a niche product,â says Cory Venable, John Deere product manager. âNow they have become an essential product for effective crop production. More and more producers are seeing the value and return on investment that a self-propelled sprayer offers.
self propelled. The definition of self propelled is something that moves, progresses or acts on its own power without needing outside help. An example of self propelled is a lawnmower that draws from its own power to go up hills and to move along the grass. self-propelled. self-propelled.