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.
- 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).
Litmus
A pigment used as a test for acidity and alkalinity. Litmus paper turns red in acid and blue in an alkaline solution. Litmus is prepared from lichens like Roccella tinctoria. Figuratively, a litmus test is a decision in which a single…
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Show more- Blood sugar, low The sugar here is glucose. Low blood glucose constitutes hypoglycemia. Hypoglycemia is only significant when…
- Testicular self-examination A monthly procedure for detecting the early signs of testicular cancer. Men should check the testes visually…
- A (adenine) In genetics, A stands for adenine, one member of the A-T (adenine-thymine) base pair in DNA. The other base…
- Conjunctivitis, allergic Inflammation of the whites of the eyes (the conjunctivae) with itching and redness of the eyes and tearing…
- Alien hand syndrome Syndrome: The feeling that one's hand is possessed by a force outside of ones control. The syndrome typically…
- Pernicious anemia Pernicious anemia: A blood disorder caused by inadequate vitamin B12 in the blood. Patients who have this…
- Trismus Inability to open the mouth fully. This may be due to spasm of the jaw muscles and be a symptom of tetanus…
- Pleural effusion Excess fluid between the two membranes that envelop the lungs. These membranes are called the visceral and…
- Vestibulocochlear nerve A nerve that is responsible for the sense of hearing and which is also pertinent to balance, to the body…
- Motion, range of The range through which a joint can be moved, usually its range of flexion and extension. Due to an injury…
- Transmission, vertical Transmission of a disease-causing agent (a pathogen) vertically from mother directly to baby during the…
- Artificial knee A replacement for the human knee. An artificial knee typically has a metal shell on the end of the thigh bone…