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).
Hypnic jerk
The common normal phenomenon of jerking awake, usually accompanied by a feeling of falling, just as one is drifting off to sleep. Also called a sleep jerk or sleep start
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Show more- Galen Greek physician and philosopher (born about 129 AD, died about 210 AD) known among other things for his…
- Ribosome An RNA molecule that can catalyze its own chemical reactions.
- State cancer registry >Monitor cancer trends over time. >Determine cancer patterns in various populations. >Guide planning and…
- Pancreas divisum Pancreas divisum: Pancreas divisum is a common congenital anomaly (an anomaly that is present at birth) of…
- Intelligence test A questionnaire or series of exercises designed to measure intelligence. It is generally understood that…
- Proximal myotonic myopathy See: Myotonic dystrophy type 2
- Facial nerve paralysis Loss of voluntary movement of the muscles on one side of the face due to abnormal function of the facial…
- Metered-dose inhaler Abbreviated MDI. A device that delivers a measured amount of medication as a mist the patient can inhale. A…
- Lower motor neuron A nerve cell that goes from the spinal cord to a muscle. The cell body of a lower motor neuron is in the…
- Methemoglobin A particular type of hemoglobin that is altered so that it is useless for carrying oxygen and delivering it…
- Vertebrae, cervical The cervical (neck) vertebrae are the upper 7 vertebrae in the spinal column (the vertebral column). They are…
- Test, RPR Rapid plasma reagin, a blood test for syphilis that looks for an antibody that is present in the bloodstream…