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).
Myoclonic twitch
A rapid, involuntary muscle contraction, particularly near the eye. Myoclonic tics resemble, and may be mistaken for, tics. Like tics, they tend to occur more often when the person is under stress; unlike tics, they are not preceded by any…
Read the definitionRandom terms
Show more- Rebound Return of the original symptoms when maneuvers or treatment is discontinued
- System, sympathetic nervous A part of nervous system that accelerates the heart rate, constricts blood vessels, and raises blood…
- Phen-Fen The once-popular diet-drug combination of fenfluramine and phentermine that, amidst much media attention, was…
- Peripheral nervous system ): That portion of the nervous system that is outside the brain and spinal cord. The peripheral nervous…
- Kirklin, John W. American cardiovascular surgeon (1920-2004) who improved and applied the heart-lung machine to open heart…
- Midwife, direct-entry See: Direct-entry midwife
- Study, cross-sectional A study done at one time, not over the course of time. A cross-sectional study a disease such as AIDS might…
- Chromatids The daughter strands of a duplicated chromosome joined together by a centromere.
- Attenuated FAP Attenuated familial adenomatous polyposis
- Primary sclerosing cholangitis Primary sclerosing cholangitis: A chronic disorder of the liver in which the ducts carrying bile from the…
- Dissociation In psychology and psychiatry, a perceived detachment of the mind from the emotional state or even from the…
- SiRNA Abbreviation for small inhibitory RNA, a short sequence of RNA which can be used to silence gene expression