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).
Folic acid
One of the B vitamins that is a key factor in the synthesis (the making) of nucleic acid (DNA and RNA). A deficiency of folic acid after birth causes a kind of anemia, namely, megaloblastic anemia in which there is a paucity of red blood…
Read the definitionRandom terms
Show more- STL2 Stickler syndrome, type II. See: Stickler syndrome
- Hyperventilation Overbreathing. This can cause dizziness, lightheadedness, weakness, shortness of breath, a sense of…
- Allergy to cockroaches Allergy to cockroaches: A condition that manifests as an allergic reaction when one is exposed to tiny…
- Hypocarbia Less than the normal level of carbon dioxide in the blood. The opposite of hypercarbia
- Cryoprotectant A chemical component of a freezing solution used in cryopreservation (the process of cooling and storing…
- Mutation, null A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a…
- Ventricular arrhythmias Abnormal rapid heart rhythms (arrhythmias) that originate in the lower chambers of the heart (the…
- Neuralgia Pain along the course of a nerve
- Immunodeficiency Inability to mount a normal immune response. Immunodeficiency can be due to a genetic disease or acquired as…
- Mask, oxygen A mask that covers the mouth and nose, and is hooked up to an oxygen tank. It delivers oxygen directly to the…
- Long QT syndrome An inherited defect in heart rhythm that predisposes to syncope without warning (sudden fainting spells)…
- Jet lag Jet lag: A temporary disorder that causes fatigue, insomnia, and other symptoms as a result of rapid air…