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).
Vessel, afferent
A vessel that carries blood toward the heart. A vein or venule
Read the definitionRandom terms
Show more- Marker, tumor Tumor markers are substances that can be detected in higher-than-normal amounts in the blood, urine, or body…
- Western medicine Conventional medicine, as distinct for instance from traditional Chinese medicine
- Humor, aqueous In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally…
- Necrotizing gingivitis This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Syndrome, TAR TAR stands for Thrombocytopenia (low blood platelets) and Aplasia (absence) of the Radius (the long bone on…
- Helminth A worm classified as a parasite. (A parasite is a disease-causing organism that lives on or in a human or…
- ALS Amyotrophic lateral sclerosis. ALS has two meanings. One meaning of ALS refers to several adult diseases…
- Frame, reading See: Reading frame
- Disease, Anderson-Fabry See: Fabry disease
- TPH2 Tryptophan hydroxylase 2, also known as neuronal tryptophan hydroxylase (NTPH), the key rate-limiting enzyme…
- Amygdaloid body See: Amygdaloid nucleus
- Megrim Migraine. Usually periodic attacks of headaches on one or both sides of the head. Megrim (migraine) may be…