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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Deficiency, vitamin K
A lack of vitamin K resulting in an increase in the clotting time of the blood, impaired clotting and a tendency to excessive bleeding. Blood clotting is delayed or prevented because vitamin K is unavailable to act as an essential element…
Read the definitionRandom terms
Show more- Cell, rod A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides side vision…
- Atherectomy A procedure for opening up an artery by removing the plaque (atheroma) produced by the build-up of…
- Prefixes, medical Medical words are often put together, cobbled from two or more building blocks. Among these building blocks…
- Mammogram Mammogram: An X-ray of the breast with the breast in a device that compresses and flattens it. There are two…
- HTLV-III The human T-lymphotropic virus type III. An obsolete term for the human immunodeficiency virus or HIV
- Thermophobia An abnormal and persistent fear of heat, including hot weather and hot objects. Sufferers from thermophobia…
- Motion, range of The range through which a joint can be moved, usually its range of flexion and extension. Due to an injury…
- Sagittal A crucial large vein that goes over the top of the skull from front to back and then splits to take blood…
- Automatism An unconscious movement that may resemble simple repetitive tics or may be a complex sequence of…
- Probe (1) In surgery, a probe is a slender flexible rod with a blunt end used to explore, for example, an opening…
- Escherichia coli Full term for E. coli, the colon bacillus.
- Gerstmann-Straussler-Scheinker syndrome See: Gerstmann-Straussler-Scheinker syndrome