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).
Nerve, first cranial
The first cranial nerve is the olfactory nerve, the nerve that carries impulses for the sense of smell from the nose to the brain. The cranial nerves emerge from or enter the skull (the cranium), as opposed to the spinal nerves which…
Read the definitionRandom terms
Show more- Hormone, progesterone A female hormone, progesterone is the principal progestational hormone. Progestational hormones prepare the…
- Krukenberg tumor A tumor of the ovary caused by the spread of stomach cancer. When the stomach cancer spreads to an ovary, the…
- Renal aneurysm An aneurysm involving the kidney
- Y chromosome sex-determining region See: Y sex-determining region
- Thyroglobulin A protein found in the thyroid gland. Some thyroglobulin can be found in the blood, and this amount may be…
- Nicotiana tabacum A South American herb whose leaves contain 2-8% nicotine and serve as the source of smoking and smokeless…
- Blighted ovum A fertilized ovum (egg) that did not develop or whose development ceased at an early stage, before 6 or 7…
- Urinalysis Urinalysis: A test that determines the content of the urine. Because urine removes toxins and excess liquids…
- Pregnancy, ectopic A pregnancy that is not in the usual place and is located outside the inner lining of the uterus. A…
- Guinea worm disease A parasitic disease caused by infection with the guinea worm (Dracunculus medinensis), the largest parasite…
- Thomas Campion See: Campion, Thomas
- Inhibitory RNA See: RNA inactivation; and RNA interference