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.
The most common causes of poor circulation to the feet and legs are atherosclerosis and diabetes. Peripheral arterial disease can also cause poor circulation. People with peripheral arterial disease have a four-to-five times greater risk of a heart attack or stroke, according to the American Heart Association.