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).
Macro- (prefix)
Prefix from the Greek 'makros' meaning large or long. Examples of terms involving macro- include macrobiotic, macrocephaly, macrocytic, macroglossia, macrophage, macroscopic, and macrosomia. The opposite of macro- is micro-.
Read the definitionRandom terms
Show more- Biliary atresia Congenital absence or closure of the major bile ducts, the ducts that drain bile from the liver. Biliary…
- Joint, elbow Three long bones meet in the middle portion of the arm at the elbow joint. The bone of the upper arm…
- McArdle disease Glycogen storage disease type V and the most common type of glycogen storage disease. McArdle disease is an…
- Stress test, physiologic Although there can be a diversity of physiologic stress tests, this refers here to a physiologic cardiac…
- Ear tag Common minor anomaly, a rudimentary tag of ear tissue, often containing a core cartilage, usually located…
- Kussmaul breathing Air hunger.
- Yawn Involuntary opening of the mouth, often caused by suggestion. Yawning is characterized by breathing first…
- Death rate The number of deaths in the population divided by the average population (or the population at midyear) is…
- Dicentric chromosome An abnormal chromosome with two centromeres rather than the normal one. Every normal chromosome has one…
- Carcinoma of the tongue See: Tongue cancer
- Autoimmune hepatitis A disease in which the body's immune system attacks liver cells, causing inflammation of the liver…
- Ca Abbreviation for circa, meaning about or approximately, as in ca. 1 mg