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).
Red blood cells
The blood cells that carry oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide). Hemoglobin, aside from being a transport molecule, is a pigment. It gives the cells their…
Read the definitionRandom terms
Show more- Varicosity 1. An enlarged and tortuous vein, artery, or lymphatic vessel. 2. Specifically, a varicose vein
- Bronchopulmonary segments A subdivision of one lobe of a lung based on the connection to the segmental bronchus. For example, the right…
- Brachial paralysis See: Brachial plexus palsy
- Penicillium notatus The species of bread mold that produces penicillin. See also: Penicillin history
- Premenstrual Just before the start of menstruation. As in a premenstrual headache
- Band, Q A form of chromosome band, one of the bright and dull fluorescent bands seen alternating along the length of…
- CREST syndrome A limited form of scleroderma, a disease of connective tissue with the formation of scar tissue (fibrosis) in…
- Familial Parkinson disease type 7 A familial form of Parkinson disease inherited in an autosomal recessive manner due to mutation in the DJ1…
- Syndrome, MASA MASA stands for mental retardation, aphasia, shuffling gait, and adducted thumbs. Features of the syndrome…
- Morpheus In Greek and Roman mythology, the son of sleep and the god of dreams who lay on an ebony bed in a dim-lit…
- Hemifacial microsomia See: Goldenhar syndrome
- Bronchiectasis Permanent dilatation (widening) of the bronchi (the large air tubes which begin at the bottom of the trachea…