MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Appendix
A small outpouching from the beginning of the large intestine (the ascending colon). Formally called the vermiform appendix because it was thought to be wormlike. See also: Appendicitis; Appendix cancer.
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Show more- Good-for-you bacteria Bacteria that are good for health. Lactobacillus acidophilus are a type of good-for-you bacteria. The term is…
- Syndrome, stiff baby A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Passive-aggressive personality disorder A personality disorder characterized by passive-aggressive behavior. Passive-aggressive personality disorder…
- Weaver syndrome An overgrowth syndrome characterized by accelerated growth and advanced bone age (evident at birth), unusual…
- Rheumatic fever An illness that occurs following a streptococcus infection (such as a 'strep throat') or scarlet fever and…
- Vaccinia, congenital See Congenital vaccinia
- Biotherapy Treatment to stimulate or restore the ability of the immune (defense) system to fight infection and disease…
- Cranial nerve III The third cranial nerve is the oculomotor nerve. The cranial nerves emerge from or enter the skull (the…
- Anisocoria Both pupils are usually of equal size. If they are not, that is termed anisocoria (from 'a-', not + 'iso'…
- Contact healing Another name for the alternative medicine practice of laying on of hands. See: Laying on of hands. See also…
- Dilate To stretch or enlarge. It comes from the Latin verb 'dilatare' meaning 'to enlarge or expand.
- Mast cell tumor A mastocytoma