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).
Streptococcus pneumoniae (pneumococcus)
A type of bacterium that comes in pairs and is shaped like a lancet (a surgical knife with a short wide two-edged blade). Pneumococcus is the leading cause of bacterial pneumonia and otitis media (middle ear infections) and an important…
Read the definitionRandom terms
Show more- Color hearing A form of chromesthesia in which hearing a musical tone elicits the perception of a color. In one case, an…
- Scintimammography A scintigraphic imaging technique that uses the radioisotope technetium tetrofosmin (Tc-99 tetrofosmin) to…
- CAT scan, spiral A conventional computerized axial tomography scan (CAT scan or CT scan) is an x-ray procedure which combines…
- Polyuria The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and…
- Glioblastoma multiforme A type of tumor that forms from glial (supportive) tissue in the brain. It is highly malignant, grows very…
- H. heilmannii Abbreviation for Helicobacter heilmannii, a bacteria that infects most cats, dogs and pigs and, in them…
- Internal jugular vein The deeper of the two jugular veins in the neck that drain blood from the head, brain, face and neck and…
- Infectious Diseases, Nat'l Institute of Allergy & See Hepatitis A.
- AID (artificial insemination by donor) A procedure in which a fine catheter (tube) is inserted through the cervix (the natural opening of the…
- Warburg's yellow enzyme A key respiratory enzyme discovered by the German biochemist Otto Heinrich Warburg (1883-1970), a pioneer in…
- ALS2 See: Amyotrophic lateral sclerosis 2
- Citrulline antibody Citrulline antibody: An antibody (an immune protein) directed against a circular peptide (a ring of amino…