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).
Polycythemia vera (PV)
Overproduction (proliferation) of red blood cells due to bone marrow disease (myeloproferative disorder). PV tends to evolve into acute leukemia or a condition with the marrow replaced by scar tissue (myelofibrosis). To have PV, there must…
Read the definitionRandom terms
Show more- Albright syndrome Tough white fibrous tissue. The tunica albuginea of the testis, for example, is the layer of dense whitish…
- Smooth muscle One of the three types of muscle tissue in the body (skeletal, smooth, cardiac). Generally forms the…
- Succumb To lose the will to oppose something or to give up and accept something that you first opposed. In the…
- Valgus (valga, valgum) Angled outward, bent or twisted outward, as in cubitus valgus, coxa valga, hallux valgus, and…
- Sumycin See: Tetracycline
- Major histocompatibility complex See: Permanent makeup.
- Bone marrow transplant A procedure in which bone marrow that is diseased or damaged is replaced with healthy bone marrow. The bone…
- Cataract surgery Cataract surgery: Removal of the clouded lens (the cataract) in its entirety by surgery, usually followed by…
- Laryngectomy, total A surgical procedure in which the whole voice box is removed, and the stoma opening into the larynx is…
- D-IBS Diarrhea-predominant IBS (irritable bowel syndrome)
- Flail chest When enough ribs are broken (usually from a crush injury) to compromise the rigidity of the chest wall. On…
- Spindle neuron A large neuron tapered at both ends that is only found in humans and great apes and so is thought to be a…