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).
Placebo effect
A positive medical response to taking a placebo, a sham medication as if it were an active medication. Up to one-third of patients given a placebo may respond with a reduction in symptoms, depending on the condition. This phenomena is…
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Show more- Cancer, lung Cancer of the major organ of respiration - the lung. Lung cancer kills more men and women than any other form…
- Neuroepithelial Having to do with tissue made up of sensory cells that serve in the reception of external stimuli…
- Macular vision The macula is a special area in the center of the retina, the light-sensitive layer of tissue at the back of…
- IOP (intraocular pressure) The pressure created by the continual renewal of fluids within the eye. The normal IOP varies among…
- Ectopia cordis A type of birth defect in the heart is abnormally located. In ectopia cordis, the heart usually protrudes…
- Depression, bipolar See: Bipolar disorder
- Testosterone replacement therapy The practice of giving testosterone to treat conditions in which the testes do not produce enough…
- Hurricane A regionally specific name for a strong tropical cyclone. The term hurricane applies in the North Atlantic…
- HSP Henoch-Schonlein purpura. See: Schonlein-Henoch purpura
- Reflex, photic sneeze A disorder, also known as the achoo syndrome, characterized by nearly uncontrollable paroxysms of sneezing…
- Pacemaker, natural Pacemaker, natural: The natural pacemaker of the heart is the sinus node, one of the major elements in the…
- Homozygote A person who has two identical forms of a particular gene, one inherited from each parent. For example, a…