- Medial forebrain bundle
- Medial frontal
- Medial frontal gyrus
- Medial geniculate body
- Medial geniculate nucleus
- Medial intermuscular septum
- Medial lemniscus
- Medial longitudinal fasciculus
- Medial malleolus
- Medial meniscus
- Medial nasal prominence
- Medial palpebral ligament
- Medial patellofemoral ligament
- Medial pectoral nerve
- Medial plantar artery
- Medial plantar nerve
- Medial pontine reticular formation
- Medial prefrontal cortex
- Medial preoptic area
- Medial pterygoid muscle
- Medial pterygoid plate
- Medial rectus muscle
- Medial sural cutaneous nerve
- Medial temporal lobe
- Medial umbilical fold
- Medial umbilical ligament
- Medial vestibular nucleus
- Medial vestibulospinal tract
- Median aerodynamic diameter
- Median antebrachial vein
- Median aperture
- Median arcuate ligament
- Median arcuate ligament syndrome
- Median artery
- Median cubital vein
- Median eminence
- Median follow-up
- Median nerve
- Median plane
- Median preoptic nucleus
- Median raphe nucleus
- Median sacral artery
- Median sacral vein
- Median sternotomy
- Median test
- Median umbilical ligament
- Mediastinal
- Mediastinal fibrosis
- Mediastinal lymphadenopathy
- Mediastinal mass
- Mediastinal shift
- Mediastinal tumors
- Mediastinitis
- Mediastinoscopy
- Mediator
- Medic
- Medicago sativa
- Medicago truncatula
- Medical Device Reporting
- Medical Orders for Life-Sustaining Treatment
- Medical Priority Dispatch System
- Medical Subject Headings
- Medical abortion
- Medical algorithms
- Medical anthropology
- Medical assessment
- Medical bag
- Medical classification
- Medical consensus
- Medical debt
- Medical decision making
- Medical direction
- Medical director
- Medical education
- Medical electronics
- Medical emergency
- Medical errors
- Medical ethics
- Medical examiner
- Medical food
- Medical geneticist
- Medical gloves
- Medical grade silicone
- Medical humanities
- Medical image computing
- Medical imaging
- Medical implants
- Medical license
- Medical model of disability
- Medical neglect
- Medical physics
- Medical procedure
- Medical record
- Medical simulation
- Medical social work
- Medical sociology
- Medical software
- Medical statistics
- Medical technology
- Medical terminology
- Medical tests
- Medical tourism
- Medical toxicology
- Medical ultrasonography
- Medicalization
- Medically unexplained symptoms
- Medicare Part D
- Medicarpin
- Medication compliance
- Medication costs
- Medication discontinuation
- Medication errors
- Medication overuse headache
- Medication-related osteonecrosis of the jaw
- Medicinal chemistry
- Medicinal mushrooms
- Medicinal plants
- Medicinal properties
- Medicine
- Medicines reconciliation
- Mediterranean diet
- Medium chain fatty acids
- Medium chain triglycerides
- Medium spiny neurons
- Medoid
- Medrogestone
- Medroxyprogesterone
- Medroxyprogesterone acetate
- Medulla
- Medulla oblongata
- Medullary cavity
- Medullary cystic disease
- Medullary cystic kidney disease
- Medullary pyramid
- Medullary pyramids
- Medullary rays
- Medullary sponge kidney
- Medullary thymic epithelial cells
- Medullary thyroid cancer
- Medulloblastoma
- Medulloepithelioma
- Mef2
- Mefenamic acid
- Mefloquine
- Megacolon
- Megacystis
- Megaesophagus
- Megakaryoblast
- Megakaryocytes
- Megalencephaly