MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Yolk stalk
A narrow tube present in the early embryo that connects the midgut of the embryo to the yolk sac outside the embryo through the umbilical opening. Later in development, the yolk stalk is usually obliterated, but a remnant of it may…
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Show more- Muscular atrophy, post-polio (PPMA) Late muscle wasting that occurs as part of the post-polio syndrome (PPS), a constellation of symptoms and…
- Syndrome, trisomy 13 Condition with three rather than the normal two chromosomes #13. Children born with this syndrome have…
- Foot type The category into which a particular foot falls. Foot types are generally classified into one of three…
- Venom, scorpion The potent poison of the scorpion. A sting can be fatal to a person who is allergic to it. A scorpion is an…
- Lymphoblastic leukemia, acute (ALL) A form of leukemia that has a sudden onset and is characterized by the presence in the blood and bone marrow…
- Thanatology The study of death and dying, including the medical, psychological, and sociologic aspects of it. Each…
- Hippocrates Rally credited with turning away from divine notions of medicine and using observation of the body as a basis…
- Phenomenon, Raynaud's A condition resulting in discoloration of fingers and/or toes when a person is exposed to changes in…
- Reflux disease, gastroesophageal (GERD) Reflux disease, gastroesophageal (GERD): The stomach contents regurgitate and back up (reflux) into the…
- Genome, mustard Arabidopsis thaliana See: Arabidopsis thaliana genome
- Plexus 1. In medicine, a network or tangle of lymphatic vessels, nerves, or veins. For example, the brachial plexus…
- Hyperaldosteronism Overproduction of the hormone aldosterone from the outer portion (cortex) of the adrenal gland or a tumor…