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).
Liver cancer, adult primary
A tumor in which the cancer starts during adulthood in cells in the liver. Also called hepatocellular carcinoma. Primary liver cancer is different from cancer that has metastasized (spread) from another place in the body to the liver. The…
Read the definitionRandom terms
Show more- Renal capsule The fibrous connective tissue that surrounds each kidney
- Rape, date Rape of a woman by a man with whom she is acquainted. The rapist is usually the woman's 'date' (escort)…
- Obverse The opposite, the opposite side, the counterpart. For example, mania is thought of as the obverse of…
- Rod A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision…
- Totipotent Having unlimited capability. A totipotent cell has the capacity to form an entire organism. Human development…
- Syndrome, Kostmann A condition with a lack of neutrophils (a type of white blood cell that is important in fighting infection)…
- Anisometropia The condition in which the two eyes have an unequal refractive power. One eye may be myopic (nearsighted) and…
- Loa loa The eye worm, a parasite that lives in humans and other primates. People contract the parasite when bitten by…
- Spastic pseudoparalysis Better known as Creutzfeldt-Jakob disease (CJD). A dementing disease of the brain. CJD is believed to be due…
- Cervical dysplasia Changes from normal in the cells lining the cervix of the uterus. Cervical dysplasia involves a sequence of…
- Assay, NSE Neuron-specific enolase (NSE) is a substance that has been detected in patients with certain tumors, namely…
- Germ cell tumor A tumor that arise from a germ cell. These tumors may arise within the gonads -- the ovary and testis. Most…