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
subâ¢maâ¢rine. 1. a vessel that can be submerged and navigated under water. 2. something situated or living under the surface of the sea, as a plant or animal. 3. Chiefly Northeastern and North Midland U.S. a hero sandwich. 4. situated, occurring, operating, or living under the surface of the sea.5. of, pertaining to, or carried on by a submarine.n this spot there is a submarine valley worn by Humboldt's current, which skirts the coast of America as far as the Straits of Magellan.