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).
Nervous system, central (CNS)
That part of the nervous system that consists of the brain and spinal cord. The central nervous system (CNS) is one of the two major divisions of the nervous system. The other is the peripheral nervous system (PNS), that part of the…
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Show more- Sperm A sperm is the male 'gamete' or sex cell. It combines with the female 'gamete,' called an ovum, to form a…
- Hirudin An anticoagulant ('bloodthinner'). Hirudin is the active principle in the salivary secretion of leeches. The…
- Sex chromosome The X chromosome or the Y chromosome, in humans. The sex chromosomes determine the sex of an individual. As a…
- Micropigmentation Tattooing
- Error, type II See: Error, beta
- Salk Institute The Salk Institute for Biological Studies , a prominent independent non-profit institution doing basic…
- Goiter Enlargement of the thyroid gland. A goiter is not cancerous. It is simply a thyroid gland that is bigger than…
- Wilms tumor An inherited disorder in which too much copper accumulates in the body. Although the accumulation of copper…
- Test, carcinoembryonic antigen See: Carcinoembryonic antigen
- Oculomotor nerve The oculomotor nerve is the third cranial nerve. (The cranial nerves emerge from or enter the cranium, the…
- Pinel system The policy of treating the mentally ill in hospitals and other institutions humanely and without the use of…
- Oral cholecystogram Oral cholecystogram: Abbreviated OCG. An x-ray procedure for diagnosing gallstones. The patient takes…