What does "IMC" refer to in aviation terminology?

"IMC" stands for Instrument Meteorological Conditions in aviation terminology. This term refers to weather conditions that generally require pilots to operate their aircraft using instruments due to reduced visibility. IMC is typically characterized by low clouds, fog, precipitation, or any other conditions that make it difficult for pilots to maintain visual reference outside the cockpit.

When flying in IMC, pilots must rely on their training and instruments to navigate and control the aircraft, as visual flight rules (VFR) cannot be safely maintained. Understanding IMC is crucial for pilots, as it directly impacts flight safety and operational decision-making. The recognition and effects of IMC are particularly important for flight planning, communication with air traffic control, and ensuring compliance with applicable regulations regarding minimum visibility and cloud clearance requirements.