(slang, rare) Someone with DD-cup-sized breasts.

Alternative form of IDD

Abbreviation of dichlorodiphenyltrichloroethane (“compound originally developed as an insecticide”)

(professional wrestling) a move where a wrestler puts another wrestler into a standing front face lock and then falls backwards, driving the recipient's head into the floor.

(electronics) Initialism of double data rate. / (computing) Double-data-rate computer RAM.

(historical) East Germany (from German DDR, initialism of Deutsche Demokratische Republik) / (video games) Initialism of Dance Dance Revolution.

(Internet) A distributed denial-of-service attack, one that originates from many different (geographically and network topographically) sources, on a network of networks such as the Internet.

Initialism of die-deterioration doubling (“a common form of mint-made error on coins that results from degradation of the die used to strike the coin”).

(Incoterm) Initialism of Delivered Duty Paid.

(Incoterm) Initialism of Delivered Duty Unpaid.