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).
Lineage, cell
See: Cell lineage
Read the definitionRandom terms
Show more- Acrochordon A small tag of skin that may have a stalk (a peduncle). An acrochordon may appear on skin anywhere although…
- Septuagenarian Someone in his or her seventies. See also: Age by decade
- Hiccough A hiccough is an extraordinary type of breathing movement involving a sudden intake of air (inspiration) due…
- Keratoplasty Corneal transplant.
- Transcription Making an RNA copy from a sequence of DNA (a gene). Transcription is the first step in gene expression
- Gene duplication An extra copy of a gene. Gene duplication is a key mechanism in evolution. Once a gene is duplicated, the…
- Congenital ptosis of the eyelids Drooping of the upper eyelids at birth. The lids may droop only slightly or they may cover the pupils and…
- Sludge, biliary A mixture of microscopic particulate matter in bile that occurs when particles of material precipitate from…
- Kok disease A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Drug-resistant tuberculosis See: Tuberculosis, drug-resistant
- Tube A long hollow cylinder. There are many tube-like structures in the human body, such as the auditory tube…
- Q.n.s. On a lab report, q.n.s. (or qns or QNS) means Quantity Not Sufficient. Not enough blood, urine or whatever to…