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.
The term above mean sea level (AMSL) is the elevation or altitude of any object, relative to the average sea level.For example, an ocean beach would be at 0 AMSL. AMSL is used in radio (both in broadcasting and other telecommunications uses) by engineers to determine the coverage area a station will be able to reach.he sea level also changes over time when measured in the same place. The sea moves, high and low pressure zones affect the height, tides change the sea level, and local difference in gravity all affect the sea level. People can only pick a spot and calculate the mean sea level at that point and use it as a datum.