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).
EGFR
Epidermal growth factor receptor. A protein found on the surface of cells to which epidermal growth factor (EGF) binds. When EGF attaches to EGFR, it activates the enzyme tyrosine kinase, triggering reactions that cause the cells to grow…
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Show more- Gas, laughing Nitrous oxide, a gas capable of causing general anesthesia. Today nitrous oxide is sometimes given in the…
- Aqueduct of the midbrain A canal that communicates between the third and fourth ventricles in a system of four communicating cavities…
- Heterochromatin, constitutive Heterochromatin that is fixed and irreversible. Regions of constitutive heterochromatin are located at very…
- Gland, bulbourethral See: Bulbourethral gland
- Infiltrate To penetrate. If an IV infiltrates, the IV fluid penetrates the surrounding tissue.
- Fecal occult blood test Fecal occult blood test: A test to check for hidden blood in the feces. Fecal refers to stool. Occult means…
- Biopsy The removal of a sample of tissue for purposes of diagnosis. (Many definitions of 'biopsy' stipulate that the…
- Bacteriaphobia An abnormal and persistent fear of germs. Sufferers from bacteriaphobia experience undue anxiety even though…
- Gland 1. A group of cells that secrete a substance for use in the body. For example, the thyroid gland. 2. A group…
- XRT Medical abbreviation for radiotherapy
- Lizard bite Only two types of lizards are poisonous: the Gila monster that lives in Arizona and Mexico and the beaded…
- Psychology The study of the mind and mental processes, especially in relation to behavior. There are a number of fields…