Plain English Meaning

A small map-within-a-map on the cockpit display that shows extra information alongside the main view.

Full Definition

A small, secondary map window displayed within the main moving-map area of an electronic flight display, showing additional navigation, weather, traffic, or terrain information at a different scale or focus than the primary map view.

Context Anchor

Seen on electronic flight displays during the instrument scan, often in a corner or side area of the main flight screen.

Derivation

From 'inset,' meaning something set into or placed inside something larger. The word goes back to Old English settan (to set or place), with 'in' added to mean placed within. In displays, an inset map is literally a smaller map set inside the main map area.