MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Passive smoking
The inhaling of environmental tobacco smoke (ETS) by someone who is not smoking. See: ETS
Read the definitionRandom terms
Show more- Study, preclinical A study to test a drug, procedure or medical treatment in animals. The aim is to collect data in support of…
- Ovum An egg in the ovary of the female. This egg is called the female 'gamete' or sex cell. It combines with the…
- Aqueduct A channel for the passage of fluid.
- Dr. Andrew Weil Dr. Andrew Weil is a physician and proponent of alternative medicine. Dr. Weil is the Director and founder of…
- Rib, sternal One of the first 7 pairs of ribs. A rib is said to be a 'sternal' rib or a 'true' rib if it attaches to the…
- P.r.n. Abbreviation meaning 'when necessary' (from the Latin 'pro re nata', for an occasion that has arisen, as…
- PDR Physicians' Desk Reference (please see entry to Physicians' Desk Reference). PDR less frequently stands for…
- Lateral meniscus of the knee The word 'meniscus' refers to a crescent-shaped structure. The lateral meniscus of the knee is a thickened…
- Anterograde memory Loss of short-term memory with retention of memories from the distant past (long-term memory)
- Acou- Combining form relating to hearing. As in acoustic, otoacoustic emission test, and presbyacousia
- Cell fusion The melding of two or more cells into one cell called a heterokaryon. A heterokaryon may reproduce itself for…
- Thoracic outlet syndrome Thoracic outlet syndrome: A condition due to compromise of blood vessels or nerve fibers between the armpit…