Other
- Decessit sine prole (s.p.), a Latin initialism used in genealogy to indicate that a person died without having children
- Delta Sigma Phi, a social fraternity
- Delta Sigma Pi, a co-ed business fraternity
- Demand Side Platform, technology to do targeted, fine-tuning and real-time advertisement delivery
- Designated Suppliers Program, an anti-sweatshop standard used in some US universities
- Desmoplakin, a human gene
- Deutscher Spiele Preis, a board games award in Germany
- Diarrheal shellfish poisoning
- Dry Sterilisation Process
- SAIL, an acronym for Durgapur Steel Plant in Durgapur, India
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