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).
Ulcer, aphthous
Ulcer, aphthous: A small sensitive painful ulcer crater in the lining of the mouth. Commonly called a canker sore. Aphthous ulcers are one of the most common problems that occur in the mouth. About 20% of the population (1 in 5 people)…
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Show more- Dormant tuberculosis See: Tuberculosis, dormant. See also: Tuberculous meningitis.
- Rate, neonatal mortality The number of children dying under 28 days of age divided by the number of live births that year. The…
- Sly syndrome A disorder of mucopolysaccharide metabolism characterized by short stature, coarsening of the facial…
- Alopecia areata Alopecia areata: A patchy baldness which typically begins with patchy hair loss on the scalp and sometimes…
- Systolic click-murmur syndrome See: Mitral valve prolapse
- Orthotic A support, brace, or splint used to support, align, prevent, or correct the function of movable parts of the…
- Epistaxis Medical term for nosebleed. The nose is a part of the body that is very rich in blood vessels (vascular) and…
- Formula feeding Feeding an infant or toddler prepared formula rather than breast-feeding, or in addition to breast-feeding…
- XTC A street name for 3-4 methylenedioxymethamphetamine. See: Ecstasy
- Seedrin Trade name of the insecticide aldrin. See: Aldrin and dieldrin
- Encephalitis, Rasmussen A rare progressive neurological disorder that is characterized by intractable seizures and progressive…
- Glial cell A supportive cell in the central nervous system -- the brain and spinal cord. Glial cells do not conduct…