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 technical name for this condition is âchronic venous insufficiencyâ (CVI) but not all swollen legs are caused by CVI. Get your legs checked by a doctor just in case you have a heart or kidney problem, which can also cause water retention in legs feet and ankles. Swollen legs are also common in pregnancy and are caused by the pressure of the baby on the veins in the pelvis.