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.
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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).
Hypernatremia
Elevated blood sodium. Sodium is the major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is Na+ (from natrium, a synonym for sodium). When combined with chloride (Cl), the resulting substance is table…
Read the definitionRandom terms
Show more- Vesicointestinal See: Vesicoenteric
- EM (electron microscope) A microscope in which an electron beam replaces light to form the image. EM stands for electron microscope…
- Nonocular type Stickler syndrome Stickler syndrome, type III. See: Stickler syndrome
- Dorian Gray effect Sudden aging, an abrupt change from seeming youthfulness to the reality and ravages of age, as can occur…
- Sinus, ethmoid See: Ethmoid sinus
- Sacral vertebrae There are 5 sacral vertebral bones. They are represented by the symbols S1 through S5 and are situated…
- Acid, folic One of the B vitamins that is a key factor in the synthesis (the making) of nucleic acid (DNA and RNA). A…
- Bone type One of the four basic bone shapes in the human skeleton -- long bones, short bones, flat bones, and irregular…
- Arterial tension The pressure of the blood within an artery, the arterial pressure. Also called the intra-arterial pressure
- Cortical blindness Blindness due to loss or injury to the visual cortex, that section of the cerebral cortex responsible for…
- Meditation A self-directed practice for relaxing the body and calming the mind. Most meditative techniques have come to…
- HCM Abbreviation for hematocrit. The hematocrit is the proportion, by volume, of the blood that consists of red…