| 释义 |
PTD may refer to: - Partido de los Trabajadores Dominicanos (Dominican Workers' Party), a political party in the Dominican Republic
- Poloidal–toroidal decomposition, a technique in mathematics for representing solenoidal vector fields
- Pre-term delivery, alternate term for preterm birth, of a baby of less than 37 weeks gestational age
- Participatory technology development, learning and innovation in international sustainable agriculture programs
- Pre-Thread Data file, an element of the Microsoft .NET Framework
- Prevention through design, method for mitigating occupational hazards
- PTD, FAA location identifier for Potsdam Municipal Airport in New York state
- Post-travel depression, alternate term for post-vacation blues
- Pathfinder Technology Demonstrator, a NASA project using CubeSats
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