Glossary
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| Term | Definition |
|---|---|
| Post-exposure prophylaxis | Vaccination or medication given soon after exposure to a disease to prevent infection, as with rabies or measles. Vaccines |
| Potential energy | Stored energy an object has because of its position or condition, such as a raised weight or a stretched spring. Science General |
| Power | The rate at which energy is transferred or work is done, measured in watts. Science General |
| Pre-flection | Pre-flection is a reflective strategy or session held before an experience, training, or learning task begins. Science General |
| Pre-industrial | The period before large-scale industrial activity, usually represented by 1850-1900 in climate science, used as the baseline for measuring global warming. Climate Change |
| Pre-registration | Publicly recording a study's hypotheses, methods and analysis plan before collecting data, to prevent p-hacking and selective reporting. Science General |
| Pre-training | The initial, large-scale training of a model on broad data before it is adapted for specific tasks. Artificial Intelligence |
| Prebunking | A proactive strategy to build resilience against misinformation by teaching people to recognize manipulation tactics before they encounter them. Based on psychological inoculation theory, it works like a vaccine: exposing people to a "weakened" dose of disinformation techniques to help them develop mental "antibodies". Antiscience |
| Precautionary principle | The idea that when an action risks serious harm, lack of full scientific certainty should not be used as a reason to postpone preventive measures. It is sometimes misapplied to demand zero risk. Science Literacy |
| Precession | The wobble over thousands of years of the tilt of the Earths axis with respect to the plane of the solar system. Climate Change |