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).
Acute coronary syndromes
A spectrum of conditions involving chest discomfort or other symptoms caused by lack of oxygen to the heart muscle (the myocardium). The unification of these manifestations of coronary artery disease under a single term reflects the…
Read the definitionRandom terms
Show more- Epithelial basement corneal dystrophy A disorder in which the cornea (the normally clear front window of the eye) shows grayish fingerprint lines…
- Vitamin B -- niacin Deficiency of niacin, one of the B-complex vitamins, causes pellagra. See: Pellagra
- Vitreous type Stickler syndrome Stickler syndrome, type I. See: Stickler syndrome
- Wax, ear The ear canal is shaped somewhat like an hourglass. The skin on the outer part of the canal has special…
- Abraham-man Also abram-man. One of a class of beggars who once wandered over England after the dissolution of the…
- Hemi- Prefix meaning one half, as in hemiparesis, hemiplegia, and hemithorax. From the Greek hemisus meaning half…
- Sixth cranial nerve The sixth cranial nerve is the abducent nerve, a small motor nerve that has one task: to supply a muscle…
- Phosphatase, acid Acid phosphatase is an enzyme that works under acid conditions and is made in the liver, spleen, bone marrow…
- Pharmacologist A specialist in the study of medications and their effects on the body
- Bipolar disease Manic-depressive disease. See: Bipolar disorder
- Muscle, supraspinatus >The supraspinatus muscle; >The subscapularis muscle, which moves the arm by turning it inward (internal…
- Megacolon An abnormally enlarged colon.