The nature of a convergent boundary depends on the type of plates that are colliding. Where a dense oceanic plate collides with a less-dense continental plate, the oceanic plate is typically thrust underneath because of the greater buoyancy of the continental lithosphere, forming a subduction zone.
Medical Definition of URINAL. 1. : a vessel so constructed that it can be used for urination by a bedridden patient. 2. : a container worn by a person with urinary incontinence.
1 URINARY BLADDER: Urinary Bladder collects urine before it is excreted from the body. 2  Urinary bladder is a hollow muscular and elastic organ siting on the pelvic floor. 3  URETHRA: Urethra is a tube that connects the urinary bladder to the external genitalia for elimination from the body.