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).
Carcinoma, hepatocellular
A tumor in which the cancer starts during adulthood in cells in the liver. Also called adult primary liver cancer. Primary liver cancer is different from cancer that has metastasized (spread) from another place in the body to the liver…
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Show more- Nicotinic acid Deficiency of nicotinic acid (also known as niacin), one of the B-complex vitamins, causes pellagra. Pellagra…
- Bile duct cancer An uncommon type of cancer that arises from the bile duct, the tube that connects the liver and the…
- Pituitary gland The main endocrine gland. It is a small structure in the head. It is called the master gland because it…
- Toddler A young child who is learning to walk with short unsteady steps. The word toddle is of unknown origin
- Matricectomy The process of surgically, chemically, or electrically destroying all or part of the base nail portion called…
- ART (antiretroviral therapy) Treatment that suppresses or stops a retrovirus. One of the retrovirus is the human immunodeficiency virus…
- Fear of dust An abnormal and persistent fear of dust. Sufferers of this fear experience anxiety even though they realize…
- Endometrial biopsy Endometrial biopsy: A procedure for sampling the lining of the uterus (the endometrium). Endometrial biopsy…
- Immunization, HIB This immunization is designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria…
- Lobectomy An operation done to remove a lobe of an organ such as the lobe of a lung or a lobe of the thyroid gland. The…
- LPA Little People of America. The abbreviation also for the left pulmonary artery
- Vaccination, serum hepatitis Serum hepatitis is hepatitis B (hep B). Hep B vaccine gives prolonged protection, but 3 shots over a half…