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).
Expressed sequence tag (EST)
A unique stretch of DNA within a coding region of a gene that is useful for identifying full-length genes and serves as a landmark for mapping. An EST is a sequence tagged site (STS) derived from cDNA. An STS is a short segment of DNA…
Read the definitionRandom terms
Show more- Histiocytosis, malignant Histiocytosis in which the histiocytes actually become cancerous. Treatment is by radiation and chemotherapy…
- Staphylococcal scalded skin syndrome An infection of the skin with group II Staphylococcus aureus bacteria. The bacteria release toxins, causing…
- Rotator cuff disease Rotator cuff disease: Damage to the rotator cuff, a group of four tendons that stabilize the shoulder joint…
- Brachial plexus >Avulsion, the most severe type, in which the nerve is torn from the spine; >Rupture, in which the nerve is…
- Polyuria The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and…
- Androgen A male sex hormone that promotes the development and maintenance of the male sex characteristics. The major…
- Major A major may be an officer in the military but, in a larger sense, it can be anything that is more than…
- Pregnancy Pregnancy: The state of carrying a developing embryo or fetus within the female body. This condition can be…
- Nasal Having to do with the nose. Nasal drops are intended for the nose, not (for example) the eyes. The word…
- Lymphoproliferative Referring to the proliferation of the bone marrow cells that give rise to lymphoid cells (such as lymphocytes…
- Delirium A sudden state of severe confusion and rapid changes in brain function, sometimes associated with…
- Caudal anesthesia Anesthesia produced by injection of a local anesthetic into the caudal canal, the sacral portion of the…