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).
Eye, absent
Also called anophthalmia, a congenital malformation (birth defect) of the globe. Anophthalmia refers, strictly speaking, to absence of the globe and ocular tissue from the orbit. However, in most cases of anophthalmia, CT scans show some…
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Show more- Hypnagogic Concerning the drowsiness one commonly feels before sleep, the transitional state preceding sleep, and also…
- Osteopenia Mild thinning of the bone mass, but not as severe as osteoporosis. Osteopenia results when the formation of…
- Ventricle A chamber of an organ. For example, the four connected cavities (hollow spaces) in the central portion of the…
- Jerk, sleep See: Hypnic jerk
- C-peptide A byproduct of insulin production, usually by the pancreas. The level of C-peptide is a gauge of how much…
- In situ In the normal location. An 'in situ' tumor is one that is confined to its site of origin and has not invaded…
- Ethyl acrylate A substance used in making latex paints and textiles. The US government removed ethyl acrylate from its list…
- Pregnancy, hyperemesis of Excessive vomiting during pregnancy which, by definition, leads to the loss of 5% or more of the body weight…
- Tummy 1. Babytalk for the stomach. The word tummy is derived from stomach.2. Slang for a paunch. A big tummy raises…
- Craniotomy A surgical operation in which an opening is made in the skull.
- TGF Transforming growth factor
- Dilation, pupil This examination enables your eye care professional to see more of your retina, the light-sensitive layer of…