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).
Valsalva maneuver
A maneuver in which a person tries to exhale forcibly with a closed glottis (the windpipe) so that no air exits through the mouth or nose as, for example, in strenuous coughing, straining during a bowel movement, or lifting a heavy weight…
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Show more- Flesh-eating bacteria A popular media term for a type of strep bacteria (group A streptococcus) which rapidly destroys tissue and…
- Overload, iron Iron overload can damage the heart, liver, gonads and other organs. Iron overload is a particular risk for: >…
- Cytosis 1. Suffix referring to cells, as in anisocytosis (inequality in the size of red blood cells), elliptocytosis…
- Menorrhagia Excessive uterine bleeding occurring at the expected intervals of the menstrual periods. The bleeding from…
- Topoisomerase A class of enzymes that alter the supercoiling of double-stranded DNA. (In supercoiling the DNA molecule…
- Sclerose en plaques French for multiple sclerosis. Literally, sclerosis in plaques
- Fasting blood glucose A method for learning how much glucose (sugar) there is in a blood sample taken after an overnight fast. The…
- Lancing device A device that holds a lancet firmly, and when triggered, moves the lancet linearly ahead to prick the skin in…
- Ulcerative colitis Ulcerative colitis: A relatively common disease that causes inflammation of the large intestine (the colon)…
- Admission Entry. As a patient admission (into a hospital). The opposite of admission in this context is discharge
- Dilation, pupil This examination enables your eye care professional to see more of your retina, the light-sensitive layer of…
- Saccharomyces cerevisiae Baker's yeast. The simplest single-cell organism that operates in a manner similar to a human cell and…