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).
TAR syndrome
TAR stands for Thrombocytopenia (low blood platelets) and Aplasia (absence) of the Radius (the long bone on the thumb-side of the forearm), features characterizing this syndrome. There is phocomelia (flipper-limb) with the thumbs always…
Read the definitionRandom terms
Show more- Rectal exam, digital (DRE) An exam done to detect abnormalities that can be felt (palpated) from within the rectum. The doctor inserts a…
- Syndrome, Bernard-Soulier Nt platelet syndrome): This is a primary problem of platelets in which the platelets lack the ability to…
- Temporomandibular joint (TMJ) The joint that hinges the lower jaw (mandible) to the temporal bone of the skull. It is one of the most…
- Syndrome, radial aplasia-thrombocytopenia See Syndrome, TAR
- Unassisted childbirth Birth of a baby without the assistance of an obstetrician, midwife, or other health professional. This may be…
- Fetus The unborn offspring from the end of the 8th week after conception (when the major structures have formed)…
- Plague, sylvatic Plague that is spread by ground squirrels and other wild rodents, for example, in the western portion of the…
- Basal cell nevus syndrome The Gorlin syndrome
- Proteins Large molecules composed of one or more chains of amino acids in a specific order determined by the base…
- Beals See: Beals, Rodney K.
- Nervous system, human The sum total of the tissues that record and distribute information within a person, and does so by…
- Loss-of-function mutation A mutation that results in reduced or abolished protein function. Gain-of-function mutations,which are much…