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).
Opisthotonos
A great rigid spasm of the body with the back fully arched and the heels and head bent back. Opisthotonos occurs in meningitis, especially in infants, due to irritation of the membranes surrounding the brain and spinal cord. It also occurs…
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Show more- Cramping leg pain A serious disease characterized by inflammation of the walls of the blood vessels (vasculitis). The vessels…
- Antisense In molecular biology, the strand complementary to a coding sequence of a nucleic acid. Antisense DNA is the…
- Impaction, dental Teeth pressing together. For example, molar teeth (the large teeth in the back of the jaw) can be impacted…
- Q.d. (on prescription) Seen on a prescription, q.d. (or qd) means one a day (from the Latin quaque die). The abbreviation is…
- Section, lower segment Cesarian (LSCS) A Cesarian section in which the surgical incision (cut) is made in the lower segment of the uterus
- Periaortic Around the aorta. The aorta is the great artery that comes from the left ventricle of the heart and delivers…
- Regurgitation A backward flowing. For example, of food. Or the sloshing of blood back into the heart (or between chambers…
- Genetic infantile agranulocytosis Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting…
- Acute-phase reactant See: Acute-phase protein
- Tetany >Hyperreflexia (overactive neurological reflexes), >Carpopedal spasm (spasms of the hands and feet), >Cramps…
- Glaucoma Glaucoma: A common eye condition in which the fluid pressure inside the eyes rises because of slowed fluid…
- Transforming growth factor (TGF) One of several proteins secreted by transformed cells that can stimulate the growth of normal cells…