MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Activity, drug
A measure of the physiological response a drug produces in the body. A less active drug produces less response (and visa versa)
Read the definitionRandom terms
Show more- Bicornuate Having two horns or horn-shaped branches. The uterus (normally unicornuate) can sometimes be bicornuate (with…
- DISH Diffuse idiopathic skeletal hyperostosis
- Homicide 1. The killing of a person. 2. Strictly speaking, the killing of a man. femicide. From the Latin meaning…
- Rheumatism, psychogenic Rheumatism in which the patient reports inconsistent pains of muscles and joints that do not correspond to…
- Ptosis of the eyelids, adult Drooping of the upper eyelids in adults, most commonly due to separation of the tendon of the lid-lifting…
- Premature contraction of the heart When a single heartbeat occurs earlier than normal. This phenomenon can be within normal limits or represent…
- Nonagenarian Someone in his or her ninties, that is, between 90 and 99 years of age. See also: Age by decade
- Opportunistic infection An infection that occurs because of a weakened immune system. Opportunistic infections are a particular…
- UTI Urinary tract infection. (Not to be confused with URI: upper respiratory infection).
- Biopsy, incisional See: Incisional biopsy
- Hyperhidrotic Pertaining to hyperhidrosis, excessive sweating. Hidrosis meaning sweating, so hyperhidrosis is too much…
- Stasis ulcer A stasis ulcer is an ulcer (a crater) that develops in an area in which the circulation is sluggish and the…