infrared / negative ultraviolet (IR/NUV) seeking

negative thrust propeller / negative-thrust propeller

ultraviolet (UV)

ultraviolet absorption

ultraviolet light

ultraviolet radiation

heat-seeking

heat-seeking missile

radar-seeking standoff missile

earth seeking

target seeking

target-seeking aircraft

target-seeking equipment

target-seeking guidance

target-seeking bomb

negative electrical charge

negative report

battery negative post

negative dihedral

negative dihedral effect

negative dihedral situation

negative dihedral wing

negative source

negative stability

negative vertical acceleration

negative

negative contact

negative sensor

negative enemy contact

negative contact (in cloud)

negative contact on

Enables reversible motor direction to provide negative thrust and allow inverted flight

negative thrust