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).
Eye chart, Snellen's
The familiar eye chart used to measure how well you see at various distances. Snellen's chart is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that line of letters is normally…
Read the definitionRandom terms
Show more- AFO (ankle-foot orthosis) Ankle-foot orthosis
- Cousin marriage Marriage involving cousins. Everyone carries rare recessive alleles, rare genes that are generally innocuous…
- Hirudotherapy The use of leeches for medical therapy. Sometimes referred to as the 'treatment that sucks.' From hirudin…
- Deafness with goiter Deafness with goiter: See Pendred syndrome
- Wax, ear The ear canal is shaped somewhat like an hourglass. The skin on the outer part of the canal has special…
- Disease, Kimmelstiel-Wilson Diabetic nephropathy (kidney disease). Kimmelstiel-Wilson disease is a kidney condition associated with…
- Inversion, paracentric chromosome A basic type of chromosome rearrangement in which a segment that does not include the centromere (and so is…
- Hippocampus An area buried deep in the forebrain that helps regulate emotion and memory. Functionally, the hippocampus is…
- Library, cDNA A collection of DNA sequences generated from mRNA (messenger RNA) sequences. This type of DNA library…
- Radiograph A film with an image of body tissues that was produced when the body was placed adjacent to the film while…
- Paricalcitol A vitamin D analogue. Brand name: Zemplar. In 1998 paricalcitol was approved by the FDA for the treatment of…
- Sinuous Curving in and out; in a serpentine, wavy form; winding. From the Latin noun 'sinus,' which means 'curve…