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).
Reaction, vasovagal
See: Vasovagal reaction
Read the definitionRandom terms
Show more- Presentation, breech Birth in which the buttocks present before the head
- Systole, extra See: Extrasystole
- Aphonia Inability to speak.
- Sleep, twilight Sleep, twilight: A term applied to the combination of analgesia (pain relief) and amnesia (loss of memory)…
- Tendo Achilles See: Achilles tendon
- Megrim Migraine. Usually periodic attacks of headaches on one or both sides of the head. Megrim (migraine) may be…
- Sinus 1. An air-filled cavity in a dense portion of a skull bone. The sinuses decrease the weight of the skull. The…
- Lizard bite Only two types of lizards are poisonous: the Gila monster that lives in Arizona and Mexico and the beaded…
- Interstitial radiation Radiation therapy in which a radioactive material is placed directly into a tumor.
- Trait, sickle cell A person who possess one copy of the gene for sickle cell anemia. This person carries the gene but does not…
- Electroencephalogram A study of electrical current within the brain. Electrodes are attached to the scalp. Wires attach these…
- Chromosome inversion A basic type of chromosome rearrangement. A segment that does not include the centromere (and so is…