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.
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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).
Prokaryote
A unicellular organism lacking a nuclear membrane, a discrete nucleus, and other specialized compartments within the cell. Bacteria and viruses are prokaryotes. It appears that life arose on earth about 4 billion years ago. The simplest of…
Read the definitionRandom terms
Show more- Straight-jacket See: Straitjacket
- Kissing disease A name for infectious mononucleosis ('mono'), a very common illness caused by the Epstein-Barr virus (EBV)…
- Trial, clinical A trial done to evaluate the effectiveness and safety of medications or medical devices by monitoring their…
- Uterus, contraction of the The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…
- Tropical cyclone A regionally specific name for a strong tropical cyclone in the Southwest Indian Ocean. Other terms for…
- Carbon monoxide hemoglobin See: Carboxyhemoglobin
- Radiolucent Anything that permits the penetration and passage of X-rays or other forms of radiation. Radiolucent is as…
- Osler, Sir William Renowned Canadian physician (1849-1919) who taught at McGill University, the University of Pennsylvania…
- Accommodation In medicine, the ability of the eye to change its focus from distant to near objects (and vice versa). This…
- Syndrome, incontinentia pigmenti A genetic disease that begins soon after birth with the development of blisters on the trunk and limbs. These…
- Mast cell A connective tissue cell whose normal function is unknown but which is frequently injured in allergic…
- Atrophy, peroneal muscular Charcot-Marie-Tooth disease