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).
Microorchidism
Abnormally small testes. To determine if the testes are too small, a device called an orchidometer is used that permits the testes to be compared to a series of plastic ovals (like miniature American footballs) of differing sizes…
Read the definitionRandom terms
Show more- Cranial nerve, ninth The ninth cranial nerve is the glossopharyngeal nerve. The 12 cranial nerves, the glossopharyngeal nerve…
- Nervine A nerve tonic, a medicine that acts therapeutically upon the nerves, particularly in the sense of a sedative…
- Fiber and cholesterol Soluble fiber substances are effective in helping reduce the blood cholesterol. This is especially true with…
- ALS6 See: Amyotrophic lateral sclerosis 6
- Bartholin's glands A pair of glands between the vulva and the vagina that produce lubrication in response to stimulation. With a…
- Phacoemulsification A procedure in which the lens clouded by a cataract is broken up by ultrasound, irrigated, and suctioned out…
- Familial dysautonomia A genetic disorder of the autonomic nervous system, affecting especially Ashkenazi Jewish children. Familial…
- Systole, premature See: Extrasystole
- Error of the second kind See: Error, beta
- Kostmann disease Children born with this condition lack neutrophils (a type of white blood cell that is important in fighting…
- Central core disease See: Central core disease of muscle
- Uterus, contraction of the The tightening and shortening of the uterine muscles. During labor, contractions accomplish two things: (1)…