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).
Corticosteroid allergy
A delayed allergic reaction to corticosteroid (drugs similar to cortisone). This occurs in 1-4% of people who use corticosteroids for asthma or other allergic diseases. A positive patch test to a corticosteroid means the patient cannot use…
Read the definitionRandom terms
Show more- Radiation therapy Radiation therapy: The use of high-energy rays to damage cancer cells, stopping them from growing and…
- Oligodendroglioma A rare slow-growing type of brain tumor that begins in cells called oligodendrocytes, which provide support…
- Stickler syndrome, type III See: Stickler syndrome
- Aspiration, joint A procedure whereby a sterile needle and syringe are used to drain joint fluid from the joint. This is…
- Psychological imprinting A remarkable genetic phenomenon that occurs in animals, and theoretically humans, in the first hours of life…
- Typhus fever See: Typhus
- Regulatory sequence A sequence of bases in DNA that controls gene expression
- Siamese twin Twin: Identical (monozygotic) twins that did not separate fully from one another but are still partially…
- Resection, video-assisted Surgery that is aided by the use of a video camera that projects and enlarges the image on a television…
- Scan, thyroid An image taken of the thyroid gland after radioactive iodine is taken by mouth. The thyroid gland is in front…
- Draft DNA sequence Sequence of a DNA with less accuracy than a finished sequence. In a draft sequence, some segments are missing…
- Mononucleosis Infection with the Epstein-Barr virus (EBV, human herpesvirus 4, HHV-4) in which there is an increase of…