What does the letter (L) stand for on weather maps?

<p style=";text-align:left;direction:ltr">Arab Weather - The letter (L) on weather maps symbolizes a low pressure system or low air pressure.</p><p style=";text-align:left;direction:ltr"> Depressions are areas where the air pressure is lower than the surrounding areas, and are often associated with unstable weather conditions, such as heavy clouds, rain, and storms. This is caused by air rising upwards, which cools and condenses water vapor, causing clouds and precipitation.</p>