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).
Visual acuity
The clarity or clearness of the vision, a measure of how well a person sees. The ability to distinguish details and shapes of objects; also called central vision. The word 'acuity' comes from the Latin 'acuitas' = sharpness.
Read the definitionRandom terms
Show more- Deafness, congenital Deafness, congenital: Loss of hearing present at birth. Congenital deafness contrasts to acquired deafness…
- Breast reduction Breast reduction: Surgical reduction of breast size in order to reduce the weight of the breasts and relieve…
- Juncture In anatomy, a place where two or more structures join; a joint. From the Latin jungere, to join
- Otosclerosis The abnormal formation of new bone in the middle ear that gradually immobilizes the stapes (stirrup bone) and…
- Macule A small localized change in the color of skin that is neither raised (elevated) nor depressed. Macules are…
- Respiration 1. The act of inhaling and exhaling air in order to exchange oxygen for carbon dioxide. Synonymous with…
- Tricho- (prefix) Pertaining to hair. As in trichobezoar (a hair ball), trichotillomania (compulsive hair pulling)…
- Ophthalmoplegia-plus syndrome See: Kearns-Sayre syndrome
- KHM Keratoderma hereditarium mutilans. See: Vohwinkel syndrome
- Duct A passage or a tube with well-defined walls suitable for the conveyance of air or liquids, as the bile duct…
- Tapeworm, armed Taenia solium
- Hormone, estrogenic A female hormone produced by the ovaries (or an equivalent hormone synthesized in the laboratory). Estrogen…