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.
Sitting or standing too long can cause your tissue to hold water. If your job keeps you on your feet, you may notice swollen legs and ankles at the end of the day. Itâs also common after a long time on an airplane. The key is to keep blood circulating.