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).
Facultative heterochromatin
Chromosome material that can be either heterochromatin or euchromatin. The inactive X chromosome is made up of facultative heterochromatin. When a woman transmits that X chromosome to a son, the chromosome reverts to the euchromatic state…
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Show more- Electrocoagulation The coagulation (clotting) of tissue using a high-frequency electrical current applied locally with a metal…
- Fever, Southeast Asian hemorrhagic A syndrome due to the dengue virus that tends to affect children under 10, causing abdominal pain, hemorrhage…
- Cancer, pancreatic See: Pancreatic cancer
- EGF Epidermal growth factor. A polypeptide (small protein) that is a powerful mitogen. (It stimulates cells to…
- Fish-odor syndrome An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the…
- Medicare Part A The Medicare program that covers inpatient hospital stays. Medicare is the United States government's health…
- Eyelids, adult ptosis of the Drooping of the upper eyelids in adults, most commonly due to separation of the tendon of the lid-lifting…
- Medigap policy In the US, a Medicare supplement insurance policy sold by private insurance companies to fill 'gaps' in…
- Lithium Lithium: Lithium carbonate (brand names: Eskalith; Lithobid), a drug used as a mood stabilizer for the…
- Parry's disease Toxic multinodular goiter. Named for the English physician Caleb Hillier Parry (1755-1822). also called…
- Autonomic failure Malfunction of the autonomic nervous system due to imbalance between the sympathetic and parasympathetic…
- Incontinence Inability to control excretions. Urinary incontinence is inability to keep urine in the bladder. Fecal…