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.
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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).
REM sleep
Sleep: REM sleep is the portion of sleep when there are rapid eye movements (REMs). Dreams occur during REM sleep. We typically have 3 to 5 periods of REM sleep per night. They occur at intervals of 1-2 hours and are quite variable in…
Read the definitionRandom terms
Show more- Syndrome, Aase-Smith I See: Aase-Smith syndrome I
- Heat prostration Overheating of the body due to extreme weather conditions. Unrelieved hyperthermia can lead to collapse and…
- Hyperglycemia Hyperglycemia: A high blood sugar. An elevated level specifically of the sugar glucose in the blood…
- Antibody An immunoglobulin, a specialized immune protein, produced because of the introduction of an antigen into the…
- Hypoglossal neuropathy Disease of the hypoglossal nerve, the twelfth cranial nerve. The twelve cranial nerves, the hypoglossal nerve…
- Diarrhea, rotavirus Diarrhea, rotavirus: A leading cause of severe winter diarrhea in infants and young children. Each year…
- Cyst, synovial, of the popliteal space A swelling in the space behind the knee (the popliteal space). The swelling is composed of a membrane-lined…
- Modeling, chromatin See: Chromatin remodeling
- Illness, heat-related A person with symptoms including headache, nausea, and fatigue after exposure to heat probably has some…
- Dropsy An old term for the swelling of soft tissues due to the accumulation of excess water. In years gone by, a…
- Anesthetic, general An anesthetic that puts the person to sleep
- Medication, antiviral An drug that kills viruses or suppresses their replication and, hence, inhibits their capability to multiply…