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).
Th1
A distinct type of T-helper cell. See: T-helper cell
Read the definitionRandom terms
Show more- Queensland tick typhus One of the tick-borne rickettsial diseases of the eastern hemisphere. Queensland tick typhus is similar to…
- Mountain sickness >If possible, don't fly or drive to high altitude. Start below 10,000 feet (3,048 meters) and walk up. >If…
- Avery See: Avery, Oswald Theodore
- Snoring Snoring: A rough rattling noise made on inspiration during sleep by vibration of the soft palate (the back of…
- Antenatal surgery The surgical treatment of the fetus before birth. Also called prenatal surgery or, most often, fetal surgery…
- Plasma donation The donation of sale of blood plasma for use in medical or other products. Unlike blood donors, most plasma…
- Mitochondrial encephalopathy, MELAS MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a…
- Hypoplasia Underdevelopment or incomplete development of a tissue or organ. For example, there can be hypoplasia…
- Reflex, patellar See: Knee jerk
- Eyes, glaucoma Glaucoma: Disease (there is more than one type) characterized by increased pressure within the eye. Glaucoma…
- Johnson-Stevens syndrome See: Stevens-Johnson syndrome.
- Nerve, efferent A nerve that carries impulses away from the central nervous system (CNS). An efferent nerve is the opposite…