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).
Menstruation, anovular
Menstruation without ovulation. The egg stays within the ovary and usually disintegrates but sometimes it is fertilized, resulting in a life-threatening pregnancy within the ovary
Read the definitionRandom terms
Show more- Ankylosis Stiffness or, more often, fusion of a joint. From the Greek ankylsis, meaning stiffening of a joint
- HPS 1. Hantavirus pulmonary syndrome.2. Hermansky-Pudlak syndrome
- Syndrome, Edwards This is trisomy 18 syndrome. There are three instead of the normal two chromosomes #18. Children with this…
- Ring chromosome A structurally abnormal chromosome in which the end of each chromosome arm has been lost and the broken arms…
- Hallucinogen A drug that causes hallucinations (profound distortions in a person's perceptions of reality). Under the…
- Hypergraphia The driving compulsion to write; the overwhelming urge to write. Hypergraphia may compel someone to keep a…
- Sac, amniotic Amniotic sac
- Primary ciliary dyskinesia The immotile cilia syndrome, a condition in which poorly functioning cilia (hairlike projections from cells)…
- Evidence based medicine See: Evidence-based medicine
- Bony tarsus The bony tarsus is made up of 7 bones that are situated between the bones of the lower leg and the metatarsus…
- Complete androgen insensitivity syndrome A genetic disorder that makes XY fetuses insensitive (unresponsive) to androgens (male hormones). Instead…
- DNA In the UK, DNA is an abbreviation for "did not attend." (In the US, the term used for a patient who missed an…