Synthetic vision Regulation

Synthetic vision means a computer-generated image of the external scene topography from the perspective of the flight deck that is derived from aircraft attitude, high-precision navigation solution, and database of terrain, obstacles and relevant cultural features.

14 CFR 1.1 · the regulation governs
Also defined in 2 more sources

Synthetic vision system means an electronic means to display a synthetic vision image of the external scene topography to the flight crew.

14 CFR 1.1

A realistic display depiction of the aircraft in relation to terrain and flight path.

Guidance: Pilot's Handbook of Aeronautical Knowledge, p. G-29