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).
Hyperactivity
A higher than normal level of activity. An organ can be described as hyperactive if it is more active than usual. Behavior can also be hyperactive. People who are hyperactive always seem to be in motion. They can't sit still; they may dash…
Read the definitionRandom terms
Show more- Midwife, direct-entry See: Direct-entry midwife
- Craniosynostosis Premature fusion of the cranial sutures (the fibrous joints between the bones of the skull) in an infant…
- Albino A person with albinism. The term was first applied by the Portuguese to people in West Africa who may have…
- Blepharospasm Involuntary forcible closure of the eyelids. The first symptom may be uncontrollable blinking. Only one eye…
- Anti-reflux surgery (fundoplication) A surgical technique that strengthens the barrier to acid reflux when the lower esophageal sphincter does not…
- Tylosis A callus or thickening. See: Tylosis with esophageal cancer
- Vaccination, Haemophilus influenzae type B (HIB) Immunization designed to prevent diseases caused by Haemophilus influenzae type B (HIB), a bacteria…
- Hyperopia Farsightedness; the ability to see distant objects more clearly than close objects. Hyperopia may be…
- Periodic abstinence Also known as fertility awareness, natural family planning, and the rhythm method, this approach entails not…
- Bipolar disorder Dding=0 width='100%' border=0> ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%'…
- Hoarseness Hoarseness: Hoarseness is a term referring to abnormal voice changes. Hoarseness may be manifested as a voice…
- Glaucoma detection You may know of the 'air puff' test or other tests used to measure eye pressure in an eye examination. But…