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.
How to Treat Fluid Retention. Fluid retention occurs when the body cannot get rid of excess water. Fluid retention can occur for a variety of reasons, but most commonly it is caused by premenstrual syndrome in women, too much salt in your diet or as a side effect from medication. As a result of fluid retention, there may be some swelling of the body especially in the legs, ankles, hands, feet and abdomen.