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).
Nerve pathways, visual
The optic nerves serving the eyes join behind the eyes just in front of the pituitary gland to form a cross-shaped structure called the optic chiasma. Within the optic chiasma some of the nerve fibers cross. The fibers from the nasal…
Read the definitionRandom terms
Show more- Pericardial effusion Too much fluid within the pericardium, the fibrous sac that surrounds the heart. The pericardium normally…
- Duodenitis Inflammation of the duodenum. (The duodenum is the first part of the small intestine.
- Chekhov See: Chekhov, Anton
- Gonad A reproductive gland (ovary or testis) that produces germ cells (gametes). In embryonic life, the gonad in…
- Curse, Ondine's Failure from birth of central nervous system control over breathing while asleep. There are usually no…
- Nephrotic syndrome, minimal change See: Minimal change disease
- Score, Apgar A practical method to assess a newborn infant, the Apgar score is a number arrived at by scoring the heart…
- PGA (polyglandular autoimmune syndrome) A genetic autoimmune disease with an extraordinary array of clinical features but characterized most often by…
- Streptococcus, group A A well-known strain (type) of streptococcus (strep) bacteria that can cause strep throat and common skin…
- Cancer survivor Someone who has received the diagnosis of a potentially fatal form of cancer and is therefore forced to face…
- Eicosapentaenoic acid One of the principal omega-3 fatty acids. Abbreviated EPA. The body has a limited ability to manufacture EPA…
- Deep A device put within the body that is designed to recognize certain types of abnormal heart rhythms…