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).
Second cranial nerve
The second cranial nerve is the optic nerve, the nerve that connects the eye to the brain and carries the impulses formed by the retina -- the nerve layer that lines the back of the eye, senses light and creates the impulses -- to the…
Read the definitionRandom terms
Show more- Vessel, afferent A vessel that carries blood toward the heart. A vein or venule
- SIDS with dysgenesis of testes Abbreviated SIDDT. For more, see: SIDDT
- Drusen Tiny yellow or white deposits in the retina of the eye or on the optic nerve head. The presence of drusen is…
- Second stage of labor The part of labor from the full dilatation of the cervix until the baby is completely out of the birth canal…
- Stillbirth The tragic birth of a dead baby, the delivery of a fetus that has died before birth. There is no possibility…
- Naris One of the two nares, the openings to the nasal cavities that allow air to flow in and out or, more simply, a…
- Progestin Any one of a group of steroid hormones that have the effect of progesterone
- Shock, secondary Shock that occurs as a side effect of another problem, such as a crushing injury or heart attack.
- Papillomatosis A disorder with numerous papillomas wart growths). For example, laryngeal papillomatosis is the presence of…
- Recurrent respiratory papillomatosis Recurrent respiratory papillomatosis involves the growth of numerous warty growths in the larynx on the vocal…
- Genetics of Parkinson disease See: Forensic genetics.
- Fiber and cholesterol Soluble fiber substances are effective in helping reduce the blood cholesterol. This is especially true with…