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).
Periosteum
The periosteum is a dense membrane composed of fibrous connective tissue that closely wraps (invests) all bone, except that of the articulating surfaces in joints which are covered by a synovial membrane. 'Peri-' is a prefix borrowed from…
Read the definitionRandom terms
Show more- X-linked On the X chromosome. 'Linked' in genetics does not mean merely associated. An X-linked gene travels with the…
- Prolactin A hormone secreted by the pituitary gland. Prolactin stimulates lactation (milk production). It also has many…
- Shigellosis Epidemic and opportunistic bacillary dysentery due to infection with the Shigella bacteria. Shigellosis…
- Frontal lobe The part of each hemisphere of the brain located behind the forehead that serves to regulate and mediate the…
- HMPS Hereditary mixed polyposis syndrome
- Major anxiety disorder >panic disorder; >obsessive-compulsive disorder; >PTSD (post-traumatic stress disorder); >social phobia…
- Respiratory insufficiency The condition in which the lungs cannot take in sufficient oxygen or expell sufficient carbon dioxide to meet…
- Thoracic duct A vascular structure which recirculates lymph into the blood stream. It begins in the abdomen and tracks…
- Nail infection, fungal The most common fungus infection of the nails is onychomycosis. Onychomycosis makes the nails look white and…
- Persantine thallium scan A type of myocardial perfusion scan done to disclose any areas of the heart muscle that may not be getting…
- Ancylostoma infection Hookworm, an intestinal parasite that usually causes diarrhea or cramps. Heavy infestation with hookworm can…
- Lymphadenopathy virus Another name for the human immunodeficiency virus (HIV), the cause of AIDS. HIV has also been called the…