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).
P.r.n.
Abbreviation meaning 'when necessary' (from the Latin 'pro re nata', for an occasion that has arisen, as circumstances require, as needed). One of a number of hallowed abbreviations of Latin terms that have traditionally been used in…
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Show more- Antimalarial A drug directed against malaria. The original antimalarial agent was quinine which took its name from the…
- Lithotriptor A stone crushing machine used to shatter kidney stones and gallstones by physical or other means such as with…
- Minamata disease A disorder caused by methyl mercury poisoning that was first described in the inhabitants of Minamata Bay…
- Myocyte A muscle cell. From myo-, muscle + -cyte, cell = muscle cell. 'Remaining young at heart is a desirable but…
- Myopia Myopia: Nearsightedness, the ability to see close objects more clearly than distant objects. Myopia can be…
- Echopraxia The involuntary imitation of the movements of another person. Echopraxia is a feature of schizophrenia…
- Macular Pertaining to the macula. A macula is a small spot. A macula on the skin is a small flat spot while the…
- Neuralgia, postherpetic Localized pain in the area of involvement of shingles that persists beyond one month. The most common…
- Calf The belly or fleshy hind part of the leg below the knee. The calf is made up mainly of the gastrocnemius…
- Manorexia A term that has been used to refer to anorexia nervosa in males. This is not an officially recognized medical…
- ALOX5AP Arachidonate 5-lipoxygenase-activating protein. See: FLAP
- Acquired immunity Immunity acquired by infection or vaccination (active immunity) or by the transfer of antibody or lymphocytes…