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.
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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).
Absorbed dose
In radiology, the amount of energy that is deposited in any material by ionizing radiation. The unit of absorbed dose, the rad, is a measure of energy absorbed per gram of material. An alternative unit of absorbed dose is the gray. One…
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Show more- Quadriplegic Pertaining to quadriplegia (paralysis of all four limbs -- both arms and both legs), as from a high spinal…
- Ketone body A chemicals that the body makes when there is not enough insulin in the blood and it must break down fat…
- Gonad A reproductive gland (ovary or testis) that produces germ cells (gametes). In embryonic life, the gonad in…
- Rapid eye movement sleep Sleep: Rapid eye movement sleep (REM) sleep is the portion of sleep when there are rapid eye movements…
- Prayer of Maimonides A prayer that is said to have been written by the 12th-century physician-philosopher Moses Maimonides. Like…
- Pharmacologist A specialist in the study of medications and their effects on the body
- Kveim test A skin test for detecting sarcoidosis, a disease of unknown origin that causes inflammation of body tissues…
- Ca Abbreviation for circa, meaning about or approximately, as in ca. 1 mg
- Caps Abbreviation for capsules. One of a number of hallowed abbreviations of terms that have traditionally been…
- Aneurysm, renal An aneurysm involving the kidney. An aneurysm is a localized widening (dilatation) of an artery, vein, or the…
- Ophthalmoplegia with myopathy See: Kearns-Sayre syndrome
- Neurotoxin A substance that causes damage to nerves or nerve tissue. For example, lead is a neurotoxin