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.
This usually occurs as the result of a problem with the left heart, according to David S. Feigin, M.D. of Johns Hopkins University. This condition causes excess fluid to build up in the blood vessels, which leads to water retention in the feet, ankles and legs.