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).
ALS
Amyotrophic lateral sclerosis. ALS has two meanings. One meaning of ALS refers to several adult diseases characterized by progressive degeneration of motor neurons. (In the UK, the term 'motor neuron disease' is used for these disorders.)…
Read the definitionRandom terms
Show more- Incontinent Unable to control excretions, to hold urine in the bladder or keep feces in the rectum. This is the usual…
- Phlebotomus fever See: Sandfly fever
- Drain, Penrose See: Penrose drain
- Transmission, perinatal Transmission of a disease-causing agent (a pathogen) from mother to baby during the perinatal period, the…
- Stanley B. Prusiner See: Prusiner, Stanley B.
- Doyne honeycomb retinal dystrophy Abbreviated DHRD. An eye disease also known as malattia leventinese. See: Malattia leventinese
- Laxative Something that loosens the bowels. Used to combat constipation (and sometimes overused, producing diarrhea)…
- Ligament A ligament is a tough band of connective tissue that connects various structures such as two bones…
- Heartworm Dirofilaria immitis. A common parasite of dogs in many parts of the world that occurs in other animals…
- Cortical Having to do with the cortex, the outer portion of an organ. The outer portion of the adrenal gland is called…
- Keratoderma hereditarium mutilans See: Vohwinkel syndrome
- Prematurity Historically, the definition of prematurity was 2500 grams (about 5 1/2 pounds) or less at birth. The current…