What is sciatica? Sciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve. The sciatic nerve is formed by the nerve roots coming out of the spinal cord into the lower back. It goes down through the buttock, then its branches extend down the back of the leg to the ankle and foot.
Definition of navigable - (of a waterway or sea) able to be sailed on by ships or boats, (of a website) easy to move around in Definition of navigable - (of a waterway or sea) able to be sailed on by ships or boats, (of a website) easy to move around in
1 Gulf-a part of a lake or ocean that extends so that it is surrounded by land on three sides, similar to, but larger than a bay. 2  Headland-an area of water bordered by land on three sides. 3  Harbor-an artificial or naturally occurring body of water where ships are stored or may shelter from the ocean's weather and currents.odies of water that are navigable are known as waterways. Some bodies of water collect and move water, such as rivers and streams, and others primarily hold water, such as lakes and oceans. The term body of water can also refer to a reservoir of water held by a plant, technically known as a phytotelma.