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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Castleman disease
A disorder of lymphoid tissue (lymphadenopathy) with massive overgrowth (hyperplasia) of lymph nodes ('swollen glands'), most commonly affecting the nodes between the lungs (in the mediastinum). There are two quite different forms of…
Read the definitionRandom terms
Show more- Primary amebic meningoencephalitis A rare, but fatal infection of the central nervous system caused by Naegleria fowleri, an ameba that inhabits…
- Greek medicine Medicine in Greece and the Greek world. The foundations of much of modern Western medicine lie in classical…
- Pollinosis 1. Hay fever in response to pollen. 2. Hay fever in response to any allergen. See: Hay fever.
- Secondary pulmonary arterial hypertension See: Pulmonary hypertension
- Pachydactyly Thick fingers or toes. A feature, for example, of neurofibromatosis. From the Greek pachys, thick + daktylos…
- Fear of children An abnormal and persistent fear of babies and children. Sufferers experience anxiety even though they realize…
- Hormone, estrogenic A female hormone produced by the ovaries (or an equivalent hormone synthesized in the laboratory). Estrogen…
- Air travel with diabetes A concern for patients with diabetes is flying with medications and supplies. Letters from doctors are not…
- Pill In pharmacy, a medicinal substance in a small round or oval mass meant to be swallowed. Pills often contain a…
- Polyarteritis nodosa Polyarteritis nodosa: An autoimmune disease (immune system attacking its own body) characterized by…
- Phenylketonuria Phenylketonuria: The inherited inability to metabolize (process) the essential amino acid phenylalanine due…
- Normal growth rate The speed with which normal growth occurs in length before birth and in height after birth. Fetal growth is…