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).
Synapse
The point of connection usually between two nerve cells. Specifically, a synapse is a specialized junction at which a nerve cell (a neuron) communicates with a target cell. The neuron releases a chemical transmitter (a neurotransmitter)…
Read the definitionRandom terms
Show more- IRB Institutional Review Board
- Angiography A procedure performed to view blood vessels after injecting them with a radioopaque dye that outlines them on…
- Cancer, womb See: Uterine cancer
- Colon cancer family history A family history of colorectal cancer (CRC). First-degree relatives of people with CRC are themselves at a 2…
- Psychooncology See: Psycho-oncology.
- Fibrosarcoma A malignant tumor that begins in fibrous connective tissue at the ends of the arm or leg bones and may spread…
- Human metapneumovirus A novel virus that is a ubiquitous and important agent of respiratory disease. The human metapneumovirus…
- Abductor muscle Any muscle used to pull a body part away from the midline of the body. For example, the abductor muscles of…
- Senile lentigo A benign pigmented flat spot on sun-exposed skin in older adults, especially on the back of the hands and on…
- Fetal infant An extremely low birth weight infant. A very, small infant. One, for example, with a birth weight of 400 to…
- Hair of the dog An alcoholic chaser reputed to relieve a hangover, usually needed the morning after imbibing too much…
- PVC Premature ventricular contraction. See: Extrasystole