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).
Sleep, non-rapid eye movement
Sleep, non-rapid eye movement: 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…
Read the definitionRandom terms
Show more- Dip, paraffin A treatment for the symptoms of joint and muscle conditions, such as arthritis, that consists of melted…
- Negative, false A result that appears negative but fails to reveal a situation. An example of a false negative: a particular…
- Atrial septal defect (ASD) A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD…
- Coughing syncope The temporary loss of consciousness upon coughing. Syncope is the temporary loss of consciousness or, in…
- Strait 1. (adjective) Narrow or confined. As in straitjacket. 2. (noun) A narrow passageway. As in the pelvic strait.
- Ambien Brand name for the sedative hypnotic drug zolpidem used for sleep. For more information, see: zolpidem
- Meiotic nondisjunction Failure of two members of a chromosome pair to separate (disjoin) during meiosis so that both go to one…
- Breast infection Infection of breast tissue usually caused by bacteria, most often staph (Staphylococcus aureus), which are…
- Transcriptomics The study of the transcriptome, the complete set of RNA transcripts produced by the genome at any one time
- Tactile Having to do with touch
- Labrocyte A mast cell
- Nerve, second cranial Also known as the optic nerve. This nerve connects the eye to the brain and carries the impulses formed by…