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).
Non-rapid eye movement sleep
Sleep: NREM (non-rapid eye movement) sleep is dreamless sleep. During NREM, the brain waves on the electroencephalographic (EEG) recording are typically slow and of high voltage, the breathing and heart rate are slow and regular, the blood…
Read the definitionRandom terms
Show more- Gyrus, lingual See: Lingual gyrus
- Primary First or foremost in time or development. The primary teeth (the baby teeth) are those that come first…
- Sense-strand RNA virus See: Positive-strand RNA virus
- Tenia In medicine, tenia is a genus (group) of large tapeworms some of which are parasitic in humans. In anatomy…
- Orthodontic treatment (dental braces) Dental braces: The use of devices to move teeth or adjust underlying bone. The ideal age for starting…
- Pancreatic cancer Pancreatic cancer: Malignancy of the pancreas. Pancreatic cancer has been called a 'silent' disease because…
- Jacksonian seizure A form of epilepsy involving brief alteration in movement, sensation or nerve function caused by abnormal…
- Keratotomy A surgical incision (a cut) made into the cornea. A radial keratotomy is a surgical procedure designed to…
- Latent Hidden, dormant, inactive. The virus that causes chickenpox remains latent after the initial attack of…
- Dural sac The membranous sac that encases the spinal cord within the bony structure of the vertebral column. Dural…
- Trismus-pseudocamptodactyly syndrome See: Hecht syndrome
- Homeobox gene A gene containing a short DNA sequence of about 180 base pairs referred to as a homeobox. Homeobox genes…