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).
Infection
The growth of a parasitic organism within the body. (A parasitic organism is one that lives on or in another organism and draws its nourishment therefrom.) A person with an infection has another organism (a 'germ') growing within him…
Read the definitionRandom terms
Show more- Ninth cranial nerve The ninth cranial nerve is the glossopharyngeal nerve. The 12 cranial nerves, the glossopharyngeal nerve…
- Parumbilical Near the umbilicus (the 'belly button'). The parumbilical veins are small veins in the front wall of the…
- Glenn shunt A surgical operation for children born with cyanotic heart disease ('blue babies'), in which a large vein…
- Adult T-cell leukemia Abbreviated ATL. A malignancy of mature T lymphocytes (T cells) with its onset in adulthood caused by…
- Cancer of the vulva An uncommon cancer of women in which the malignancy is in the vulva, the outer part of the vagina, that…
- Premature systole See: Extrasystole
- Dol A unit of measurement of pain. The term dol was invented by James Hardy and his research colleagues Herbert…
- Neoplasia The process of abnormal and uncontrolled growth of cells. The product of neoplasia is a neoplasm (a tumor)
- Contractions, Braxton Hicks Irregular contractions of the womb (the uterus) occurring towards the middle of pregnancy in the first…
- Thiamine Vitamin B1. Thiamine (vitamin B1) acts as a coenzyme in the metabolism of the body. Deficiency of thiamine…
- Sleep disorders Sleep disorders: Any disorder that affects, disrupts, or involves sleep. The most common sleep disorder is…
- Tube, auditory The tube that runs from the middle ear to the pharynx, also known as the Eustachian tube. The function of…