Plain English Meaning
A flying map covering a wide area at a smaller scale than the more detailed Sectional Chart. It shows less fine detail but lets you see more of the country on one sheet, which suits faster aircraft and longer flights.
Full Definition
A small-scale aeronautical chart, drawn at 1:1,000,000, that depicts large areas of terrain in moderate detail and is intended for use by pilots of moderate-speed aircraft and aircraft operating at higher altitudes. It shows cities, towns, principal roads, railroads, distinctive landmarks, drainage, terrain relief, airports, radio aids to navigation, special-use airspace, and obstructions.
Context Anchor
Seen in aeronautical chart discussions and long-distance visual flight planning, especially when choosing which scale the .