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).
Homeobox gene
A gene containing a short DNA sequence of about 180 base pairs referred to as a homeobox. Homeobox genes encode proteins that bind and regulate the expression of DNA in multicellular organisms. Homeoboxes are present in the genomes of many…
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Show more- Siddha medicine An ancient system of medicine prevalent in South India. The word Siddha comes from the Tamil word for…
- RNA editing The process in which messenger RNA (mRNA) is chemically modified ('edited') after it is synthesized (made)…
- Atelectasis Failure of full expansion of the lung at birth or a collapse thereafter of the lung. The word comes from the…
- Methadone A synthetic opiate. The most common medical use for methadone is as a legal substitute for heroin in…
- Blood in semen Padding=0 width='100%' border=0> ODYvAlign=top bgColor=#cccccc colSpan=2> vAlign=top width='100%'…
- Precursor Forerunner. That which precedes or is derived from an available source. The term 'precursor' is applied to an…
- OD (lens prescription) Abbreviation of 'oculus dexter.' Latin for 'right eye.' (The words 'dexterity' and 'dextrous' derive from…
- Arteriosclerotic retinopathy Retinal disease caused by arteriosclerosis. In this condition, the arterioles (small arteries) in the retina…
- Lavage Washing out. Gastric lavage is washing out the stomach, for example, to remove drugs or poisons
- Parrot fever (psittacosis) An infectious disease due to a bacteria (Chlamydia psittaci) contracted from psittacine birds, especially…
- Disease, exaggerated startle A genetic disorder also known as hyperexplexia in which babies have an exaggerated startle reflex (reaction)…
- Manic-depression Alternating moods of abnormal highs (mania) and lows (depression). Called bipolar disease because of the…