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).
Diachronic
The word 'diachronic' is from the Greek dia-, through + chronos, time = through time. As opposed to synchronic, at one point in time
Read the definitionRandom terms
Show more- Erotomania The false but persistent belief that one is loved by a person (often a famous or prominent person), or the…
- Malrotation of the intestine Failure for the intestine to rotate normally during embryonic development. One of the dangers is that the…
- Brown fat Brown adipose tissue, a rapid source of energy for infants in whom it forms about 5% of their body weight. It…
- Pseudoobstruction, myopathic Intestinal pseudoobstruction caused by damage to muscle cells in the walls of the bowel
- Extravasate To exude from or pass through the walls of a vessel into the surrounding tissues. Blood, lymph, or urine can…
- Anhidrosis Not sweating. From the Greek an- meaning a lack of + hidros meaning sweat = lack of sweat. The inability to…
- Common acute lymphocytic leukemia antigen (CALLA) A cell surface enzyme with neutral metalloendopeptidase activity that serves as a marker for the…
- Hypercoagulable state A hypercoagulable state is the medical term for a condition in which there is an abnormally increased…
- Hair follicle A sac from which a hair grows and into which the sebaceous (oil) glands open. The follicle is lined by cells…
- Aorta, descending The descending aorta is the part of the aorta, the largest artery in the body, that runs down through the…
- PFOA Perfluorooctanoic acid. See: Perfluorinated acid
- Tent, oxygen A tent-like device used to deliver high levels of oxygen to a patient in a bed. The tent typically covers the…