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).
HCM
Abbreviation for hematocrit. The hematocrit is the proportion, by volume, of the blood that consists of red blood cells. The hematocrit (hct) is expressed as a percentage. For example, an hematocrit of 25% means that there are 25…
Read the definitionRandom terms
Show more- Tripeptide A peptide consisting of three amino acids
- Cannonball pulse See: Pulse, water hammer
- Radio frequency identification (RFID) A system for remotely storing and retrieving data. An RFID tag may be a little sticker that can be…
- Otoplasty Otoplasty: Plastic surgery to reshape the outer ear.
- Nocardiosis An infection with bacteria called Nocardia which tend to strike the lungs, brain and skin, particularly in…
- Transmissible spongiform encephalopathy One of a number of progressive neurodegenerative disorders in animals and humans caused by similar…
- Olfactory apparatus The entire system needed to have a sense of smell. This system involves at least 1,000 genes for the…
- Ventilation, positive pressure The provision of oxygen under pressure by a mechanical respirator, a machine designed to improve the exchange…
- Rheumatic fever An illness that occurs following a streptococcus infection (such as a 'strep throat') or scarlet fever and…
- Acquired immunity Immunity acquired by infection or vaccination (active immunity) or by the transfer of antibody or lymphocytes…
- Omentectomy Surgery to remove part or all of the omentum, a fold of the peritoneum (the thin tissue lining the abdomen)…
- Chemosensory Pertaining to the sensing of chemicals, as by olfaction (the sense of smell). Diabetes and Parkinson's…