What is CQD?
'''CQD''' or '''cqd''' can be * [[Carbon quantum dot]], a carbon [[nanoparticle]] which is less than 10 nm in size and have some form of surface passivation *[[CQD (distress signal)]], one of the first [[distress signal]]s that started being used in regard to [[radio signal]]s * [[Chuanqiandian Cluster Miao language]] (ISO 639-3: cqd), a [[Hmongic]] language spoken by the [[Hmong people]] * [[Shahrekord Shahid Estaki International Airport]] (IATA: CQD), an airport in Shahrekord, Chaharmahal & Bakhtiari, [[Iran]] {{Disambiguation}}