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).
Y chromatin
A brilliantly fluorescent body seen under the microscope in cells containing a Y chromosome when the cells are stained with the dye quinacrine. Quinacrine lights up the Y chromosome more than other chromosomes.
Read the definitionRandom terms
Show more- PEF Peak expiratory flow
- Arthritis, Reiter The combination of inflammation of the joints (arthritis), eyes (conjunctivitis), and GU (genitourinary)…
- Posteroanterior In anatomy, posteroanterior (PA) means from back-to-front. For example, a PA X-ray of the chest is taken from…
- Alanine-glyoxylate aminotransferase A liver enzyme known, for short, as AGXT. See: AGXT
- Renal capsule The fibrous connective tissue that surrounds each kidney
- Capsule >In medicine, a membranous structure that envelops an organ, a joint, tumor, or any other part of the body…
- Tuberculin A protein extracted from Mycobacterium tuberculosis that is used in a skin test to determine if a person has…
- Lordosis Inward curvature of the spine. Normally, for example, the low back demonstrates lordosis. The spine is not…
- Kb Abbreviation for kilobase
- Fibril The diminutive of fiber. A small fiber, a fine thread
- Spots in front of the eyes Also known as 'floaters', blurry spots that drift in front of the eyes but do not block vision. The blur is…
- Stepmother The wife of a man who had a child by another women. See: Novercal