MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Deficiency, lactase
Not enough of an enzyme called lactase in the small intestine to digest lactose, a prominent component of milk and most other dairy products. Lactose is sometimes also used as an ingredient in other foods, so anyone with lactase deficiency…
Read the definitionRandom terms
Show more- Spinal cord The major column of nerve tissue that is connected to the brain and lies within the vertebral canal and from…
- Pap test, ThinPrep A modified Pap test technique designed to reduce some of the technical problems inherent in the traditional…
- Disease, rotator cuff Damage to the rotator cuff, a group of four tendons that stabilize the shoulder joint and move the shoulder…
- Spinal fusion Spinal fusion: A surgical procedure in which two or more of the vertebrae in the spine are united together so…
- Liver cancer, childhood See: Childhood liver cancer
- Hypotension Any blood pressure that is below the normal expected for an individual in a given environment. Hypotension is…
- Eructation Better known as burping or belching. Casting up wind (expelling air) from the stomach through the mouth
- Arthritis, spondylitis A form of arthritis causing chronic inflammation of the spine
- Disease, Vrolik's Osteogenesis imperfecta type II, an inherited connective tissue disorder with very severe bone fragility, the…
- Memory, explicit See: Explicit memory
- Trauma center A specialized facility in a hospital that is designed to provide diagnostic and treatment services for trauma…
- Neisseria infection See: Meningococcal infection