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.
The urethra is the tube through which urine exits the bladder. The urethra in women is far shorter than it is in men. In men, it has to pass through the prostate and the penis. UTIs can involve the urethra (urethritis), bladder (cystitis), or kidneys (pyelonephritis).