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).
Resistance, pulmonary
The opposition of the respiratory tree to air flow
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- Aorta, ascending The ascending aorta is the first section of the aorta, the largest artery in the body. The ascending aorta…
- Giardia A genus of protozoa that infect the gastrointestinal tract of some animals, including humans. Giardia have a…
- Dissecting aneurysm A localized widening (dilatation) of an artery (an aneurysm) in which the wall of an artery rips (dissects)…
- Thoraxes Plural of thorax
- Sigmoidoscopy Inspection of the rectum and lower colon using a thin lighted tube called a sigmoidoscope. Samples of tissue…
- Inverted repeat A sequence of nucleotides in the DNA that is identical to another except that it has been reversed (inverted)…
- Therapy, behavior A treatment program that involves substituting desirable behavior responses for undesirable ones
- BM Abbreviation for 'black male' used by doctors as shorthand when jotting down the results of their physical…
- Scanning electron microscope Abbreviated SEM. A microscope in which a finely focused beam of electrons is scanned across a specimen, and…
- Asian flu A pandemic of influenza A (H2N2) in 1957-58. First identified in China in late February 1957, the Asian flu…
- Heterotopic In the wrong place, in an abnormal place, misplaced. From the Greek roots 'hetero-' meaning 'other' + 'topos'…