Word Origin and History for tertiary Expand. adj. 1650s, of the third order, rank, degree, etc., from Latin tertiarius of or pertaining to a third, from tertius third, a third, from root of tres three (see three).
Water and Fluid retention in legs, also known as edema, is a medical condition caused by abnormal accumulation of water or fluids in the bodyâs tissues. Though excess water can be accumulated anywhere in the body, the most common areas are the ankles and legs.
There are two types of overhydration: Drinking more water than the kidneys can get rid of in the urine can cause too much water to collect in the body. When the body is unable to get rid of excess water, it is said to be retaining water. This happens with several medical conditions, for instance.