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).
Lysosome
An organelle (a little organ) in a cell containing enzymes that degrade macromolecules (large molecules) and other items (such as bacteria) taken up by a cell during the process of endocytosis. In endocytosis, macromolecules and particles…
Read the definitionRandom terms
Show more- Bioactive Having an effect upon a living organism, tissue, or cell. Biologically active. Antibiotic, enzymes, and…
- Dental Association, American (ADA) The mission statement of the ADA reads as follows: 'The ADA is the professional association of dentists…
- Polycystic kidney disease, autosomal recessive Ystic kidney disease, autosomal recessive: An early onset disorder characterized by the presence of…
- Salient Standing out. Projecting. When the true nature of a disease is poorly understood, it is often classified by…
- Thyroiditis, autoimmune See: Hashimoto thyroiditis
- Myoglobin The pigment in muscle that carries oxygen.
- Fluorouracil A much-used anticancer drug that belongs to the family of drugs called antimetabolites. Full name…
- Fever, dumdum Also called kala-azar, a chronic, potentially fatal parasitic disease of the viscera (the internal organs)…
- Retrosternal Behind the sternum (the breastbone)
- Cystinosis A genetic disease characterized by the widespread deposition of the amino acid cystine in cells due to a…
- Category four hurricane A hurricane with winds 131-155 mph (114-135 kt or 210-249 km/hr). Storm surge generally 13-18 ft above…
- Tube, Fallopian The two Fallopian tubes, one on each side, transport the egg from the ovary to the uterus (the womb). The…