- Postpartum bleeding
- Postpartum blues
- Postpartum depression
- Postpartum hemorrhage
- Postpartum psychosis
- Postpartum thyroiditis
- Postpericardiotomy syndrome
- Postreplication repair
- Poststreptococcal glomerulonephritis
- Postsynaptic cell
- Postsynaptic density
- Postsynaptic membrane
- Postsynaptic neuron
- Postsynaptic potential
- Postsynaptic receptors
- Posttranslational modification
- Posttraumatic growth
- Posttraumatic stress disorder
- Postural drainage
- Posture
- Posturography
- Postvention
- Postviral fatigue syndrome
- Postzygotic mutation
- Potable water
- Potash
- Potassium
- Potassium acetate
- Potassium alum
- Potassium arsenite
- Potassium benzoate
- Potassium bicarbonate
- Potassium binder
- Potassium bromate
- Potassium bromide
- Potassium carbonate
- Potassium channel blockers
- Potassium channels
- Potassium chloride
- Potassium citrate
- Potassium deficiency
- Potassium dichromate
- Potassium ferricyanide
- Potassium ferrocyanide
- Potassium gluconate
- Potassium hydroxide
- Potassium iodate
- Potassium iodide
- Potassium ions
- Potassium nitrate
- Potassium permanganate
- Potassium peroxide
- Potassium peroxymonosulfate
- Potassium phosphate
- Potassium salt
- Potassium sorbate
- Potassium sparing diuretics
- Potassium thiocyanate
- Potassium titanyl phosphate
- Potassium-40
- Potassium-sparing diuretics
- Potency
- Potential of mean force
- Potential space
- Potentiators
- Potentiometric titration
- Potomania
- Pott disease
- Pott's puffy tumor
- Potter syndrome
- Potyviridae
- Potyvirus
- Pouchitis
- Pouchoscopy
- Povidone
- Povidone iodine
- Powassan encephalitis
- Powassan virus
- Powder
- Powder mixture
- Power nap
- Power of a test
- Power training
- Powered air-purifying respirator
- Powered exoskeleton
- Powerlifting
- Pox viruses
- Poxviridae
- Poziotinib
- Praat
- Practice management
- Prader-Willi Syndrome
- Prader-Willi syndrome
- Pragmatic clinical trial
- Pralidoxime
- Pralidoxime chloride
- Pramipexole
- Pramlintide
- Pramocaine
- Pranayama
- Prandial
- Pranlukast
- Prasterone
- Prasugrel
- Pravastatin
- Prazepam
- Praziquantel
- Prazosin
- Pre clinical development
- Pre excitation syndrome
- Pre-conception counseling
- Pre-diabetes
- Pre-eclampsia
- Pre-ejaculate
- Pre-excitation syndrome
- Pre-existing conditions
- Pre-exponential factor
- Pre-exposure prophylaxis
- Pre-hospital emergency medicine
- Pre-integration complex
- Pre-labor
- Pre-metastatic niche
- Pre-replication complex
- Pre-term birth
- Pre-voicing
- Prealbumin
- Prebiotics
- Precancer
- Precancerous condition
- Precautionary principle
- Precedence effect
- Precentral gyrus
- Precentral sulcus
- Prechordal plate
- Precipitin
- Precision and recall
- Precision cut lung slices
- Precision cut tissue slices
- Precision grip
- Preclinical imaging
- Preclinical study
- Precocious puberty
- Preconditioning
- Preconscious
- Precordial
- Precordial pain
- Precordial thump
- Precuneus
- Precursor B-cell lymphoblastic leukemia
- Precursor cells