- Pulvinar nuclei
- Pump thrombosis
- Pumpkin seed oil
- Pumpkin seeds
- Pumpkins
- Punch biopsy
- Punctal plugs
- Punctate epithelial erosions
- Punctate hemorrhage
- Punctate inner choroiditis
- Punctate keratitis
- Punding
- Pungency
- Punica granatum
- Punicalagin
- Punicalin
- Punnett square
- Pupil dilation
- Pupillary light reflex
- Pupillary reflex
- Pupillary response
- Pupillometer
- Pupillometry
- Pure Food and Drug Act
- Pure autonomic failure
- Pure gonadal dysgenesis
- Pure oxygen
- Pure red cell aplasia
- Pure tone
- Pure tone audiometry
- Purell
- Purging
- Purging disorder
- Purification
- Purified water
- Purifying selection
- Purine analogues
- Purine metabolism
- Purine nucleoside phosphorylase
- Purine nucleoside phosphorylase deficiency
- Purine nucleotide cycle
- Purinergic receptors
- Purinergic signalling
- Purines
- Purity
- Purkinje cells
- Purkinje fibers
- Purkinje images
- Puromycin
- Purple Glove Syndrome
- Purpura
- Purpura fulminans
- Purpureocillium lilacinum
- Pursed lip breathing
- Purtscher's retinopathy
- Purulent pericarditis
- Pus
- Pustular psoriasis
- Pustules
- Pustulosis
- Pustulosis palmaris et plantaris
- Putamen
- Putrefaction
- Putrescine
- Puumala orthohantavirus
- Pvrl2
- PyBOP
- Pyaemia
- Pycnodysostosis
- Pycnometer
- Pyelectasis
- Pyelonephritis
- Pygeum
- Pygmalion effect
- Pyknocytosis
- Pyknosis
- Pylephlebitis
- Pylera
- Pyloric
- Pyloric sphincter
- Pyloric stenosis
- Pyloromyotomy
- Pyloroplasty
- Pyocyanin
- Pyoderma
- Pyoderma gangrenosum
- Pyogenic granuloma
- Pyogenic liver abscess
- Pyometra
- Pyomyositis
- Pyonephrosis
- Pyostomatitis vegetans
- Pyoverdine
- Pyramidal cells
- Pyramidal eminence
- Pyramidal process
- Pyramidal signs
- Pyramidal tract
- Pyramidal tracts
- Pyramidalis
- Pyranocoumarin
- Pyranose
- Pyrantel
- Pyrantel pamoate
- Pyrazinamide
- Pyrazine
- Pyrazinoic acid
- Pyrazofurin
- Pyrazolam
- Pyrazole
- Pyrazolone
- Pyrazolopyrimidine
- Pyrene
- Pyrethroids
- Pyrethrum
- Pyridazine
- Pyridine
- Pyridine alkaloids
- Pyridinoline
- Pyridopyrimidine
- Pyridostigmine
- Pyridoxal
- Pyridoxal 5 phosphate
- Pyridoxal kinase
- Pyridoxal phosphate
- Pyridoxine
- Pyridoxine 5′-phosphate oxidase
- Pyridoxine deficiency
- Pyridoxine-dependent epilepsy
- Pyriform sinus
- Pyrimethamine
- Pyrimidine
- Pyrimidine analogue
- Pyrimidine biosynthesis
- Pyrimidine dimers
- Pyrimidine synthesis
- Pyrimidine-nucleoside phosphorylase
- Pyrin domain
- Pyriproxyfen
- Pyrithione
- Pyrogen
- Pyroglutamate aminopeptidase
- Pyroglutamic acid
- Pyrolysis
- Pyrolytic carbon
- Pyromania
- Pyronaridine
- Pyrophosphatase
- Pyrophosphate
- Pyropoikilocytosis