What defines an anticyclone in terms of pressure?

An anticyclone is characterized by having the highest pressure at its center. This high-pressure system typically represents stable atmospheric conditions, as air in anticyclones sinks and spreads outward, leading to clear skies and calm weather. The pressure gradient around an anticyclone is such that air flows away from the center, which is indicative of high pressure. As the air descends and compresses, it warms, inhibiting cloud formation and precipitation, which are often associated with lower pressure systems like cyclones.

In contrast to this, systems with the lowest pressure at the center, such as cyclones, are known for instability, rising air, and precipitation. Fluctuating pressure does not define a stable system like an anticyclone, and systems specifically tied to precipitation are more aligned with low-pressure systems. Therefore, the correct understanding of an anticyclone revolves around its definition as a high-pressure area.