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).
Erection, penile
When the penis fills with blood and is rigid. The penis contains two chambers, called the corpora cavernosa, which run the length of the organ, are filled with spongy tissue, and surrounded by a membrane, called the tunica albuginea. The…
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Show more- Ataxia-telangiectasia A progressive neurodegenerative genetic disease characterized by cerebellar ataxia (incoordination and lack…
- Familial hypertrophic cardiomyopathy A genetic disorder of the heart characterized by increased growth (hypertrophy) in thickness of the wall of…
- Autoimmune polyglandular syndrome (APS) A genetic autoimmune disease with an extraordinary array of clinical features but characterized most often by…
- Munchhausen syndrome by proxy A parenting disorder in which the parent either fabricates an illness or induces an illness in their child…
- Zinc-finger protein See: Zinc finger
- Hemithorax Half of the thorax or, more simply, one side of the chest. The plural is hemithoraxes or hemithoraces. A…
- Mucolipidosis One of a group of inherited storage diseases in which both lipids and substances called mucopolysaccharides…
- Penis, erection of the When the penis fills with blood and is rigid. The penis contains two chambers, called the corpora cavernosa…
- Oral cancer Oral cancer: Cancer within the mouth.
- Orgasm The climax of coitus, consisting of a series of involuntary muscle contractions in the anus, lower pelvic…
- Placental dystocia Difficulty delivering the placenta (the afterbirth). Dystocia comes from the Greek 'dys' meaning 'difficult…
- Adenitis Inflammation of a gland. From the aden-, gland + -itis, inflammation