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).
Gas exchange
The primary function of the lungs involving the transfer of oxygen from inhaled air into the blood and the transfer of carbon dioxide from the blood into the exhaled air
Read the definitionRandom terms
Show more- Involuntary smoking The involuntary inhaling of environmental tobacco smoke (ETS) by someone who is not smoking. See: ETS
- Human chromosome count The usual number of chromosomes in humans, 46 chromosomes. Also called the human chromosome complement…
- Campylobacteriosis Disease caused by Campylobacter jejuni, now the leading cause of bacterial food poisoning, most often spread…
- Neuroendocrinology Having to do with the interactions between the nervous system and the endocrine system. In the human body…
- Cataract surgery Cataract surgery: Removal of the clouded lens (the cataract) in its entirety by surgery, usually followed by…
- Involute 1. Literally, to turn inward or roll inward. 2. To decrease in size after an enlargement. The uterus…
- Interventricular foramen An opening between the lateral and third ventricles in a system of four communicating cavities within the…
- Cannonball pulse See: Pulse, water hammer
- System, autonomic nervous Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic…
- Carbon monoxide on houseboats See: Houseboat carbon monoxide poisoning
- Influenza, Hong Kong See: Hong Kong flu
- Premie Short and slangy for a premature baby. A preterm infant. Also often spelled (for obscure reasons) preemie.