(electrical engineering) Able to operate on two different electrical frequencies. / (radio communications) Able to receive and operate on two different radio frequencies.

(of a person, potentially offensive) Having mixed racial parentage or ancestry.

(education, psychology) Twice-exceptional.

(US, military) The requirement for an incoming nuclear attack to be confirmed by both satellite and radar before retaliatory action is taken.

plural of Hodge dual

the existence of two separate economic sectors within one country, divided by different levels of development, technology, and different patterns of demand.

plural of dual cab

Synonym of crew cab

A twin-clutch gearbox

plural of dual photon absorptiometry