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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Topoisomerase
A class of enzymes that alter the supercoiling of double-stranded DNA. (In supercoiling the DNA molecule coils up like a telephone cord, which shortens the molecule.) The topoisomerases act by transiently cutting one or both strands of the…
Read the definitionRandom terms
Show more- Acanthamoeba A microscopic organism, an amoeba, found in soil, dust and fresh water (lakes, rivers, hot springs and hot…
- Rosacea Rosacea: A chronic skin disease that affects the middle third of the face with persistent redness over the…
- CMV (cytomegalovirus) A virus that infects 50-85% of adults in the US by age 40 and is also the virus most frequently transmitted…
- Transplant, heart See: Heart transplant
- Premie Short and slangy for a premature baby. A preterm infant. Also often spelled (for obscure reasons) preemie.
- Navel The umbilicus, the former site of attachment of the umbilical cord, usually found in about the middle of the…
- Hereditary sensory and autonomic neuropathy III A degenerative disorder of nerves with progressive spasticity of the legs. Abbreviated as AD-HSP. Spasticity…
- De Quervain's tenosynovitis De Quervain's tenosynovitis: De Quervain's tenosynovitis is inflammation of tendons on the side of the wrist…
- Brazelton newborn test A widely used test of the newborn baby as to their neurologic status and developmental progress. The…
- Inhibitor, ACE See: ACE inhibitor
- Therapy, hormone replacement (HRT) The combination therapy of estrogen plus progestogen, termed hormone replacement therapy (HRT). Estrogen…
- Smell disorder See: Olfactory disorder