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).
Periaortic
Around the aorta. The aorta is the great artery that comes from the left ventricle of the heart and delivers oxygen-rich blood to the body. Peri- is a prefix borrowed from the Greek. It means 'around or about.' So perianal is around the…
Read the definitionRandom terms
Show more- Ot- Prefix meaning ear, used before a vowel, as in otalgia and otitis. Before a consonant, ot- becomes oto-, as…
- Elastin degrading enzyme See: Elastase
- Pachymeninx The dura. From pachy- (thick) + -meninx (membrane). The plural is pachymeninges
- Doctors' symbol A staff or rod, with a snake curled around it. It is the staff or rod of Aesculapius (also called Asklepios)…
- Peripheral Situated away from the center, as opposed to centrally located. For example, peripheral vision means the type…
- Disease, exaggerated startle A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Hyperaldosteronism Overproduction of the hormone aldosterone from the outer portion (cortex) of the adrenal gland or a tumor…
- Fever, Lassa See: Lassa fever
- Sirolimus A naturally occurring substance discovered in a soil sample from Easter Island. Sirolimus was initially…
- Paternal 1. Pertaining to the father as, for example, a paternal age effect.2. Related through the father as, for…
- Lipodystrophy syndrome A disturbance of lipid (fat) metabolism that involves the partial or total absence of fat and often the…
- Bioinformatics The sum of the computational approaches to analyze, manage, and store biological data. Bioinformatics…