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).
Nerve, efferent
A nerve that carries impulses away from the central nervous system (CNS). An efferent nerve is the opposite of an afferent nerves that carries impulses toward the CNS
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Show more- Q.s. If a medicine is to be taken every so- many hours, it is written "q_h"; the "q" standing for the Latin word…
- Hurricane A regionally specific name for a strong tropical cyclone. The term hurricane applies in the North Atlantic…
- Alpha-linolenic acid An essential fatty acid found in flaxseed oil, canola oil and walnuts. Abbreviated ALA
- Genome, chromosomal All of the genetic information in the chromosomes of an organism. For humans, that is all of the DNA…
- AFP (alpha-fetoprotein) AFP is a plasma protein that is normally produced by the fetus. It serves as the basis for some valuable…
- Syphilis, tertiary The third stage of syphilis, in which the syphilis spirochetes infect the brain and other organs of the body…
- FBLN5 The gene encoding the protein known as fibulin 5. See: Fibulin 5
- Azoospermia No sperm at all. The ejaculate is completely devoid of sperm. By contrast, in oligospermia (literally, few…
- Essential oil An oil derived from a natural substance, usually either for its healing properties or as a perfume. Some…
- Disease, Marburg Despite its seeming lack of gender, this term is applied to women only. PID refers exclusively to ascending…
- Heat prostration Overheating of the body due to extreme weather conditions. Unrelieved hyperthermia can lead to collapse and…
- Tourette syndrome Tourette syndrome: A tic disorder characterized by the presence of chronic vocal and motor tics, probably…