Induced drag

Aerodynamic drag produced by an airfoil when it is producing lift. Induced drag is affected by the same factors that affect induced lift.

Aviation Maintenance Technician Handbook — Airframe, p. G-19

Also defined in 2 more sources

That part of the total drag that is created by the production of lift.

Helicopter Flying Handbook, p. G-4

Drag caused by the same factors that produce lift; its amount varies inversely with airspeed. As airspeed decreases, the angle of attack must increase, in turn increasing induced drag.

Pilot's Handbook of Aeronautical Knowledge, p. G-16

Taught in GEN-J Quick reference.