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Definition of DDD
1. Noun. (organic chemistry) dichlorodiphenyldichloroethane Dichlorodiphenyldichloroethane, an insecticide related to DDT ¹
2. Noun. (telecommunications) w:Direct distance dialing Direct distance dialing, a network-provided service that enables non-local telephone calls to be made without operator assistance ¹
3. Noun. Die-deterioration doubling, a common form of mint-made error on coins that results from degradation of the die used to strike the coin ¹
4. Noun. A designation on prerecorded compact discs indicating a "full digital recording" (recorded, mixed and mastered in digital); compare AAD, ADD, DAD. ¹
¹ Source: wiktionary.com
Medical Definition of DDD
1.