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).
Upregulation
An increase in the number of receptors on the surface of target cells, making the cells more sensitive to a hormone or another agent. For example, there is an increase in uterine oxytocin receptors in the third trimester of pregnancy…
Read the definitionRandom terms
Show more- Amyloidosis, hereditary Amyloidosis, hereditary: A familial (inherited) disorder in which protein deposits (amyloid) accumulate in…
- NIOSH The National Institute for Occupational Safety and Health, a US Federal agency responsible for conducting…
- Rectus Usually refers to the rectus abdominis, a large muscle in the front of the abdomen that assists in the…
- Hematoma, nasal septum See: Nasal septum hematoma
- Randomized clinical trial A clinical trial in which the participants are assigned randomly (by chance alone) to different treatments…
- Cardiac tamponade A life-threatening situation in which there is such a large amount of blood or other fluid inside the…
- Nerve, optic The optic nerve connects the eye to the brain. The optic nerve carries the impulses formed by the retina. The…
- Siamese twin Twin: Identical (monozygotic) twins that did not separate fully from one another but are still partially…
- Aspiration Removal of a sample of fluid and cells through a needle. Aspiration also refers to the accidental sucking in…
- Microscope, fluorescent See: Fluorescent microscope
- Straight jacket See: Straitjacket
- Tapeworm, pork Taenia solium