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…
Read the definitionRandom terms
Show more- Desquamation The shedding of the outer layers of the skin. For example, once the rash of measles fades, there is…
- Breast cancer gene One of the genes that contributes to breast cancer. See also: BRCA breast cancer gene
- Quackery Deliberate misrepresentation of the ability of a substance or device for the prevention or treatment of…
- Fluorescent microscope A microscope equipped to examine material that fluoresces under ultraviolet light. Fluorescence microscopy is…
- Cerebellar Pertaining to the cerebellum, the part of the brain in the back of the head between the cerebrum and the…
- Landry's ascending paralysis A particularly virulent form of Guillain-Barre syndrome. The disorder often begins with a flu-like illness…
- Syndrome, floppy baby A general medical reference to an abnormal condition of newborns and infants manifested by inadequate tone of…
- Melanocyte A pigment-producing cell in the skin, hair and eye that determines their color. The pigment that melanocytes…
- Retinal vasculitis Vasculitis: The retina is the portion of the eye that contains the nerves of sensation that perceive light…
- Viral hepatitis Viral hepatitis: Viral hepatitis is liver inflammation caused by viruses. Specific hepatitis viruses have…
- Psoriasis, erythrodermic A particularly inflammatory form of psoriasis that often affects most of the body surface. It is the least…
- Lung, collapsed Failure of full expansion of a once fully expanded lung. Medically called atelectasis. The word comes from…