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.
To prevent heat-related swelling, avoid the heat as much as possible. Keeping the body cool will reduce vasodilation in the legs, and thus the saturation of fluids in the legs. Equally important, avoid prolonged sitting or standing. Immobility causes fluids to pool in the feet, ankles and legs.