| CD | cadaver donor; canine distemper; canine dose; carbohydrate dehydratase; carbon dioxide; cardiac dise... |
|---|---|
| CDE | canine distemper encephalitis; chlordiazepoxide; color Doppler energy [imaging]; common duct explora... |
| CDI | cell-directed inhibitor; central or chronic diabetes insipidus; Children's Depression Inventory; col... |
| DDS | damaged disc syndrome; dendrodendritic synaptosome; dental distress syndrome; depressed DNA synthesi... |
| DDU | dermo-distortive urticaria; duplex Doppler ultrasound |
| longitudinal wave | <physics> Waves where the variation of the field is partially or totally in the direction of propagation (parallel to wavennumber, k [a vector]). Examples include sound waves and Langmuir waves. Contrasted with transverse waves, where the variation is perpendicular to the direction of propagation, such as light waves. (13 Nov 1997) |
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