MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Acapnia
Less than the normal level of carbon dioxide in the blood. The opposite of hypercapnia. The origin of the word 'acapnia' is curious. It comes from the Greek 'a-' meaning 'without' + 'kapnos' meaning 'smoke' so acapnia literally means…
Read the definitionRandom terms
Show more- Dysarthria Speech that is characteristically slurred, slow, and difficult to produce (difficult to understand). The…
- Toko- (prefix) Stemming from the Greek word 'tokos' meaning childbirth, we have toc-, toco-, tok-, and toko- as combining…
- Otosclerosis The abnormal formation of new bone in the middle ear that gradually immobilizes the stapes (stirrup bone) and…
- Hypertensive Having abnormally high blood pressure (hypertension). See also: Hypotensive; Normotensive
- Fatty acid, trans An unhealthy substance, also known as trans fat, made through the chemical process of hydrogenation of oils…
- G (gram) Symbol for gram, a unit of measurement of weight and mass in the metric system. In weight, a gram is equal to…
- RFLP An antigen found in the red blood cells of most people: those who have Rh factor are said to be Rh positive…
- Fiber and cholesterol Soluble fiber substances are effective in helping reduce the blood cholesterol. This is especially true with…
- Cross-species transplantation See Xenotransplantation
- Bayes theorem A probability principle set forth by the English mathematician Thomas Bayes (1702-1761). Bayes' theorem is of…
- Nodule, Heberden A small hard fixed bump on the finger, usually at the last joint of the finger. A Heberden nodule is a…
- Monocyte A white blood cell that has a single nucleus and can ingest (take in) foreign material. (In other words, a…