When there is one sided facial swelling, it simply means that the tissue on the enlarged side is affected. Apart from the tissue, each side of its face has its own blood, nerve and lymphatic supply. Therefore a condition that affects these structures on one side will lead to swelling only on that side.
Full Definition of SEA LEVEL. : the level of the surface of the sea especially at its mean position midway between mean high and low water. See sea level defined for English-language learners.See sea level defined for kids. ADVERTISEMENT. the level of the surface of the sea especially at its mean position midway between mean high and low water.
Sea level variations occur with gravity, temperature, weather and currents, but the sea level throughout the world is generally consistent. The elevation above sea level is based on the average of these measurements, which are taken over 19 years, and the height of a place or landmass above it.