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).
Bag, air
A bag that fills with air, designed for frontal impact crashes, the kind of crashes which account for more than half of all passenger vehicle occupant deaths. Air bags are designed to limit head and chest injuries. But they only supplement…
Read the definitionRandom terms
Show more- Y chromatin A brilliantly fluorescent body seen under the microscope in cells containing a Y chromosome when the cells…
- Oxymetholone A male hormone that stimulates production of the male hormone testosterone. It is sometimes given to treat…
- Clinophobia An abnormal and persistent fear of going to bed. Sufferers from clinophobia experience anxiety even though…
- Orifice An opening. The mouth for example is an orifice.
- Placenta, succenturiate An extra placenta separate from the main placenta. In anatomy 'succenturiate' means accessory to an organ. In…
- Comorbidity The coexistence of two or more disease processes.
- Premacular fibrosis See: Macular pucker
- Translocation 11 childhood leukemia A new type of childhood leukemia in which a piece of chromosome 11 has been translocated (broken off and…
- Bones of the trunk The bones of the human trunk, 51 bones in all, consisting of 26 vertebrae, 24 ribs and the sternum. The 26…
- Methanococcus jannaschii A microbe that produces methane, an important energy source, and contains enzymes that withstand high…
- FOBT Fecal occult blood test
- Macroglossia Enlarged tongue. Macroglossia is sometimes said to be associated with Down syndrome, but in that disorder the…