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.
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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).
Expectoration
A big polysyllabic word for sputum or the act of bringing up and spitting out sputum. From the Latin expectorare, to expel from the chest, from ex-, out of + pectus, chest
Read the definitionRandom terms
Show more- Mono Popular name for infectious mononucleosis
- Biologic evolution Biologic evolution was contrasted with cultural (social) evolution in 1968 by A.G. Motulsky who pointed out…
- Iron An essential mineral. Iron is necessary for the transport of oxygen (via hemoglobin in red blood cells) and…
- Megalencephaly Also called macrencephaly, a condition in which there is an abnormally large, heavy, and usually…
- Ear wax Ear wax: A natural wax-like substance secreted by special glands in the skin on the outer part of the ear…
- Etymology, medical See: Medical etymology
- Snowblindness A burn of the cornea (the clear front surface of the eye) by ultraviolet B rays (UVB). Also called radiation…
- Melittin The principal toxic component in bee venom. Melittin is a relatively short peptide consisting of 26 amino…
- Oscitation The act of yawning, the involuntary opening of the mouth with respiration, breathing first inward, then…
- Pityriasis alba A common mild rash of unknown origin that can appear on a person of any age (most commonly at 10-35 years of…
- Molar In dentistry, a molar is one of the posterior teeth well adapted to grinding, in keeping with its origin from…
- Bloody sputum Coughed up blood or bloody mucus. Bloody sputum can be caused by infection in the lungs and airways, such as…