There are multiple definitions:

1. Data Protection Authority(English)

2. dual photon absorptiometry(English)

   • SPA
   • Photonics

3. Differential Power Analysis(English)

   • may attack electronic health care systems
   • SCHS
   • Computing (biomedical), Communication
   • https://doi.org…0916-019-1320-7

4. daily physical activity(English)

   • MSPA, PA
   • Exercise & Training
   • https://doi.org…155/2015/876524

5. docosapentaenoic acid(English)

   • alters fatty acid composition and characteristics of fresh and frozen-thawed bull semen
   • DHA, FA, FLX
   • Genitals, Andrology, Veterinary medicine, Diet
   • https://doi.org…ogy.2014.12.008