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).
Spider bites
Bites from spiders. These are usually irritating, but not poisonous. Localized reddening and swelling are common and pass within a few days. A few spiders are poisonous, in the US notably the black widow and brown recluse (brown fiddler)…
Read the definitionRandom terms
Show more- Thalassemia Not just one disease but rather a complex series of genetic (inherited) disorders all of which involve…
- Adenoidectomy Adenoidectomy: The surgical removal of the adenoids.
- Tissue plasminogen activator (tPA) An enzyme that helps dissolve clots. tPA is made by the cells lining blood vessels and has also been…
- Neisseria Group of bacteria that includes the cause of gonorrhea.
- CD4 count, absolute See: Absolute CD4 count
- C. perfringens See: Clostridium perfringens
- Cox-1 inhibitor An agent that inhibits the action of the enzyme cox-1 (cyclooxygenase-1). The common anti-inflammatory drugs…
- Oligospermia Fewer sperm than normal. Azoospermia, by contrast, means absolutely no sperm at all.
- Intrathecal chemotherapy Chemotherapy: Treatment with drugs that are injected into the fluid surrounding the brain and spinal cord…
- Reflux The term used when liquid backs up into the esophagus from the stomach
- Vaccination, Td Td is the vaccine given to children over six and adults as boosters for immunity to diphtheria and tetanus.
- Coitophobia An abnormal and persistent fear of male-female sexual intercourse. Sufferers from coitophobia experience…