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).
Opportunistic condition
A condition that occurs especially or exclusively in persons with a weak immune system due, for example, to AIDS, cancer or immunosuppressive drugs, such as corticosteroids or chemotherapy. An opportunistic condition may be an infection…
Read the definitionRandom terms
Show more- Delusion A false personal belief that is not subject to reason or contradictory evidence and is not explained by a…
- Meter, pH See: pH meter
- Balanitis, circinate A form of skin inflammation around the penis in males with Reiter's syndrome. The skin around the shaft and…
- AIH (artificial insemination by husband) A procedure in which a fine catheter (tube) is inserted through the cervix (the natural opening of the…
- Fever, yellow See: Yellow fever
- Estrogens Female hormones produced by the ovaries. Estrogen deficiency can lead to osteoporosis. Estrogen therapy…
- Cousin marriage Marriage involving cousins. Everyone carries rare recessive alleles, rare genes that are generally innocuous…
- Ear infection, middle (acute) Acute middle ear infection, medically called acute otitis media is inflammation of the middle ear. Acute…
- Multiple system atrophy See: Shy-Drager syndrome, which is also known as multiple system atrophy with postural hypotension
- Cystic acne Acne: This is a type of localized infection (abscess) formed when oil ducts become clogged and infected…
- Fat, trans An unhealthy substance, also known as trans fatty acid, made through the chemical process of hydrogenation of…
- Acuity test, visual This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart…