resembling a cobweb or spiderweb, such as the arachnoid membrane. arachnoidal, adj. adjective. (1) Spider-like in appearance. (2) Cobweb-like; covered with or consisting of entangled soft fibres or hair-like material.
Swollen feet can cause much discomfort. People often wonder that what causes swollen feet and cause of swollen feet. Basically a swollen feet or swollen ankle is an excessive fluid builds up in the muscles, which causes swelling. In other words, there is rapid increase in weight.
Congestive heart failure causes the ankles and feet to swell because the heart is not pumping as much blood to the kidneys. This causes fluid retention, which results in the ankles and other areas of the body swelling up. Kidney failure can also cause swollen feet and ankles, again because of fluid retention. Though some swelling of the ankles in pregnancy is normal, if the ankles start to swell quickly, it may be a sign of eclampsia, explains WebMD.