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).
Genome, mitochondrial
All of the genetic information contained in the chromosome of the mitochondrion, a structure located in the cytoplasm outside the nucleus of the cell. The nucleus houses the better known chromosomal genome, our complement of chromosomes…
Read the definitionRandom terms
Show more- Ortho- (prefix) Prefix meaning straight or erect. From the Greek 'orthos' that means just that: straight or erect. Examples…
- Disease, Alzheimer See: Alzheimer disease
- Angina Angina: Chest pain due to an inadequate supply of oxygen to the heart muscle. The chest pain of angina is…
- Lightheadedness A feeling you are 'going to faint.' Lightheadedness is medically distinct from dizziness, unsteadiness, and…
- Warshaw See: Warshaw, Joseph
- Heart muscle A type of muscle with unique features only found in the heart. The heart muscle, or cardiac muscle, is…
- Knee jerk The reflex tested by tapping just below the knee causing the lower leg to suddenly jerk forward. What is…
- Assistant, physician (PA) >Medical histories and physical examinations: a PA is usually can perform histories and physical examinations…
- Nondisjunction Failure of paired chromosomes to disjoin (separate) during cell division so that both chromosomes go to one…
- Skull The skull is a collection of bones which encase the brain and give form to the head and face. The bones of…
- NICHD A silver-white metallic element. Long-term exposure to nickel, such as from jewelry, can cause a form of…
- Decongestant A drug that shrinks the swollen membranes in the nose and makes it easier to breath. Decongestants can be…