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).
Withdrawal, penis
A method of contraception, also called coitus interruptus, in which the man withdraws his penis from the vagina before ejaculation. Fertilization is prevented because the sperm do not enter the vagina. The effectiveness of this maneuver…
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Show more- Spina bifida cystica A bony defect in the vertebral column that causes a cleft in that column. The meningeal membranes that cover…
- Progeria A rare genetic disorder that causes children to age prematurely. The classic type of childhood progeria is…
- Lipid Another word for 'fat.' (Please see the various meanings of Fat.) A lipid is more formally defined as a…
- Extracorporeal membrane oxygenation (ECMO) A life support system that circulates the blood through an oxygenating system. ECMO is like a…
- EPT Estrogen/progestin therapy
- Anencephaly A neural tube defect (NTD) that occurs when the cephalic (head) end of the neural tube fails to close…
- Rheumatology A subspecialty of internal medicine that involves the non-surgical evaluation and treatment of the rheumatic…
- Cancer, stomach Cancer of the stomach, the main organ that holds food for digestion. Worldwide, stomach cancer is the second…
- Gram-positive Gram-positive bacteria retain the color of the crystal violet stain in the Gram stain. This is characteristic…
- Hereditary angioneurotic edema Edema: A genetic form of angioedema. (Angioedema is also referred to as Quinke's disease.) Persons with it…
- Ingelfinger rule The policy of considering a manuscript for publication only if its substance has not been submitted or…
- Skull The skull is a collection of bones which encase the brain and give form to the head and face. The bones of…