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).
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 do the test
Read the definitionRandom terms
Show more- Illusion A perception that occurs when a sensory stimulus is present but is incorrectly perceived and misinterpreted…
- Pia mater One of the meninges, the pia mater is the delicate innermost membrane enveloping the brain and spinal cord…
- Supraspinatus muscle >The supraspinatus muscle; >The subscapularis muscle, which moves the arm by turning it inward (internal…
- Fear of flowers An abnormal and persistent fear of flowers. Sufferers experience undue anxiety even though they realize they…
- Atkins diet A high-protein, high-fat, low-carbohydrate weight-loss diet popularized by Dr. Robert C. Atkins that allows…
- Mitral prolapse Drooping down or abnormal bulging of the mitral valve cusps during the contraction of the heart.
- Schmorl's node An upward and downward protrusion (pushing into) of a spinal disk's soft tissue into the bony tissue of the…
- Sleep-disordered breathing A condition characterized by repeated episodes of hypopnea (underbreathing) and apnea (not breathing) during…
- RBC Short for red blood cells, the cells that carry oxygen and carbon dioxide through the blood. This rather…
- Mole 1. In dermatology, a pigmented spot on the skin, Also called a nevus. 2. In gynecology, a mass within the…
- Macrosomia Overly large body. A child with macrosomia has significant overgrowth
- Ear, middle There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The middle…