Medical Definition of 'Void': Understanding Emptying in Healthcare

Void means empty or vacate. In medical terms, void is often used to describe the emptying of a body cavity, such as the bladder or bowels. For example, a patient may be asked to void their bladder before an ultrasound of the abdomen. Voiding can also refer to the process of removing a foreign body from the body, such as a tumor or a blood clot.