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).
MRI
Abbreviation and nickname for magnetic resonance imaging. For more information, see: Magnetic Resonance Imaging; Paul C. Lauterbur; Peter Mansfield
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Show more- Gly Glycine. See also: Amino acid symbols
- Pneumothorax Pneumothorax: Free air in the chest outside the lung. Pneumothorax can occur spontaneously ('out of the…
- Ear, external There are three sections of the ear. They are the external ear, the middle ear, and the inner ear. The…
- Nitrogenous base A molecule that contains nitrogen and has the chemical properties of a base. The nitrogenous bases in DNA are…
- Amyotrophic lateral sclerosis (ALS) Amyotrophic lateral sclerosis (ALS): A classic motor neuron disease. Motor neuron diseases are progressive…
- Eardrum The tympanic membrane of the ear, or tympanum, the membrane that separates the middle ear from the external…
- Queensland tick typhus One of the tick-borne rickettsial diseases of the eastern hemisphere. Queensland tick typhus is similar to…
- Thyroid hormones Chemical substances made by the thyroid gland, which is located in the front of the neck. This gland uses…
- Pulmonary hypertension Pulmonary hypertension: High blood pressure in the pulmonary artery that conveys blood from the right…
- Hyperadrenocorticism Excess hormone called 'cortisol'. Often called Cushing's syndrome, it is an extremely complex condition that…
- Mitochondrial genome All of the genetic information contained in the chromosome of the mitochondrion, a structure located in the…
- Mycoplasma The mycoplasma are a very large group of bacteria. There are more than 70 types. Mycoplasma hominis and…