A localized,balloon-like dilation of a blood vessel is called a(n) __ square

## Step 1<br />The problem is asking for the term that describes a localized, balloon-like dilation of a blood vessel. This is a medical term that is used to describe a specific condition of the blood vessels.<br />## Step 2<br />The term that fits this description is "aneurysm". An aneurysm is a localized dilation or ballooning of an artery due to a weakening of the arterial wall. This can occur in any blood vessel but is most commonly found in arteries.<br />## Step 3<br />Aneurysms can be classified based on their shape and location. They can be saccular (having a sac-like shape) or fusiform (diameter is the same throughout). They can also be classified based on their location, such as cerebral (in the brain), coronary (in the heart), and abdominal (in the abdomen).