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).
Pneumococcus (Streptococcus pneumoniae)
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- Defibrillation The use of a carefully controlled electric shock, administered either through a device on the exterior of the…
- Bone, cuboid The cuboid bone is the outer bone in the instep of the foot. It is called the cuboid bone because it is…
- White subungual onychomycosis, proximal The rarest form of fungus infection of the finger or toenail. (Fungus infection of the finger or toenail is…
- Parietal Adjective from the Latin 'parietalis' meaning 'belonging to the wall' that the ancient anatomists used to…
- Thrombosis, cavernous sinus A cavernous sinus thrombosis is a blood clot within the cavernous sinus, a large channel of venous blood in a…
- Neurobiological disorder An illness of the nervous system caused by genetic, metabolic, or other biological factors. Many illnesses…
- Ricin Ricin: A potent protein toxin made from the waste left over from processing castor beans. The castor plant…
- Andrology The branch of medicine concerned with men's health, particularly male infertility and sexual dysfunction…
- Rigour See: Rigor
- Dacry- Combining form used before a vowel to denote a relationship to tears. See: Dacryo-
- Trabecula A partition which divides or partly divides a cavity. > >One of the strands of connective tissue projecting…
- Hemophilia A Classic hemophilia, due to profound deficiency of factor VIII, a blood factor necessary to normal clotting…