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.
Home Â» Urethra. urethra. (Science: anatomy, urology) The tube that conveys urine from the bladder to the outside. In the female it measures 25.4 to 38.1 millimetres, in the male 25 centimetres. Duct through which urine is discharged in most mammals and which serves as the male genital duct.The duct responsible for discharging urine from the bladder to the external environment.