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).
AV node
An electrical relay station between the atria (the upper) and the ventricles (the lower chambers of the heart). Electrical signals from the atria must pass through the AV node to reach the ventricles. The AV node is one of the major…
Read the definitionRandom terms
Show more- Xeric Characterized by a scanty supply of moisture (or tolerating or adapted to dry conditions). The word 'xeric'…
- Antielastase An inhibitor of the action of the enzyme elastase. Alpha-1 antitrypsin is an antielastase. Also called an…
- Lips Aside from the lips of the mouth, there are two pairs of lips at the entrance to the vagina. They are the…
- Sequence, draft DNA Sequence of a DNA with less accuracy than a finished sequence. In a draft sequence, some segments are missing…
- Forced expiratory volume The volume of air that can be forced out taking a deep breath, an important measure of pulmonary function…
- Melasma Pigmentation of the face, most commonly on the malar area (the upper cheek), bridge of nose, forehead, and…
- Metacarpals Five cylindrical bones extending from the wrist to the fingers.
- Control (research) In research, control subjects or control procedures permit comparison with experimental results. The first…
- Bones of the leg, ankle and foot Are 62 lower extremity bones. They consist of 10 hip and leg, 14 ankle and 38 foot bones. > >The 10 hip and…
- Vertebra, prominent The 7th cervical (neck) vertebra (C7) is sometimes called the prominent vertebra because of the length of its…
- Uvulopalatopharyngoplasty A type of operation designed to tighten up flabby tissues and enlarge the upper air passages. The operation…
- Rad Radiation absorbed dose, a measure for a dose of ionizing radiation