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).
Ear, outer
There are three sections of the ear. They are the outer ear, the middle ear, and the inner ear. The outer ear looks complicated but it is functionally the simplest part of the ear. It consists of the pinna or auricle (the visible…
Read the definitionRandom terms
Show more- Premature contraction of the heart When a single heartbeat occurs earlier than normal. This phenomenon can be within normal limits or represent…
- Negative-strand RNA virus Also known as an antisense-strand RNA virus, a virus whose genetic information consists of a single strand of…
- Post-nasal drip Mucous accumulation in the back of the nose and throat leading to or giving the sensation of mucus dripping…
- Ovary, polycystic See: Polycystic ovary syndrome
- Cell, plasma A type of white blood cell that produces and secretes antibodies. A plasma cell is a fully differentiated…
- Syndrome, Alagille Also known as arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn…
- Homogentisate 1,2-dioxygenase The enzyme encoded in the HGD gene. Mutation of HGD causes the genetic disease alkaptonuria. Homogentisate…
- Preconceptual counselling The interchange of information prior to pregnancy. Usually for pregnancy planning and care, but sometimes in…
- Viral Of or pertaining to a virus. For example, 'My daughter has a viral rash.
- Salmon safety The safety of eating salmon, especially farm-raised salmon. The levels of more than 50 pollutants, including…
- Nomenclature A system of names used in a particular discipline, as in medicine and surgery, anatomy and biochemistry, etc…
- Glycosylated hemoglobin Hemoglobin to which glucose is bound. Glycosylated hemoglobin is tested to monitor the long-term control of…