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).
Pneumothorax
Pneumothorax: Free air in the chest outside the lung. Pneumothorax can occur spontaneously ('out of the blue', with or without underlying lung disease), follow a fractured rib, occur in the wake of chest surgery, or be deliberately induced…
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Show more- Parentalism A parent's attitude of dominance over one or more children. For example, a parent stating 'I'm the boss…
- Surgery, anti-reflux (fundoplication) A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not…
- Disease, mitochondrial >An eye disease called Leber's hereditary optic atrophy; >A type of epilepsy called MERRF which stands for…
- E. coli hemorrhagic diarrhea Bloody colitis (inflammation of the bowel) caused by E. coli, usually by the strain E. coli 0157:H7. The…
- Laryngectomy, partial A surgical procedure on the voice box designed to preserve the voice. The surgeon removes part of the voice…
- Vessel, efferent A vessel carrying blood away from the heart. An artery or arteriole
- UV radiation Ultraviolet radiation. Invisible rays that are part of the energy that comes from the sun, can burn the skin…
- Sleep, twilight Sleep, twilight: A term applied to the combination of analgesia (pain relief) and amnesia (loss of memory)…
- Amino acid One of the 20 building blocks of protein. The sequence of amino acids in a protein and, hence, the function…
- Circulation The movement of fluid in a regular or circuitous course. Although the noun 'circulation' does not necessarily…
- Galactorrhea The spontaneous flow of milk from the nipple at any time other than during nursing. Galactorrhea can be due…
- Childbirth assistant See: Doula (the first meaning)