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).
Subaortic stenosis
Narrowing of the left ventricle of the heart just below the aortic valve through which blood must pass on its way up into the aorta. The narrowing cuts the flow of blood. Subaortic stenosis may be congenital (present at birth) or acquired…
Read the definitionRandom terms
Show more- Adrenal medulla The inner portion of adrenal gland. (The outer portion is the adrenal cortex). The adrenal medulla makes…
- Graves disease Generalized diffuse overactivity ('toxicity') of the entire thyroid gland which becomes enlarged into a…
- Alembic A type of still, an apparatus used in the process of distillation. Alembics were employed in chemistry and…
- Chargaff's rule See: Chargaff rule
- Sex before sports Sexual intercourse before an athletic event. A commonly held belief in sports is that athletes should not…
- Disease Illness or sickness often characterized by typical patient problems (symptoms) and physical findings (signs)…
- Gynecologist A doctor who specializes in treating diseases of the female reproductive organs. The word 'gynecologist'…
- Proximal white subungual onychomycosis The rarest form of fungus infection of the finger or toenail. (Fungus infection of the finger or toenail is…
- Heterophyes The replacement of normal tissue of the body by abnormal tissue or by malpositioned normal tissue, a tissue…
- PVS Pigmented villonodular synovitis
- Rib >True ribs: The first seven ribs attach to the sternum (the breast bone) in the front and are known as true…
- Natural pacemaker The natural pacemaker of the heart is the sinus node, one of the major elements in the cardiac conduction…