air mass

(meteorology) rapid inward circulation of air masses about a low pressure center

n the side that is forward or prominent n the line along which opposing armies face each other n the outward appearance of a person n the side that is seen or that goes first n a person used as a cover for some questionable activity n a sphere of activity involving effort n (meteorology) the atmospheric phenomenon created at the boundary between two different air masses n the immediate proximity of someone or something n the part of something that is nearest to the normal viewer n a group of people with a common ideology who try together to achieve certain general goals v be oriented in a certain direction, often with respect to another reference point

an air mass of higher than normal pressure n

an air mass of lower pressure

n an air mass of lower pressure