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).
Photic sneeze reflex
A disorder, also known as the achoo syndrome, characterized by nearly uncontrollable paroxysms of sneezing provoked in a reflex fashion by the sudden exposure of a dark-adapted subject to intensely bright light, usually to brilliant…
Read the definitionRandom terms
Show more- Chromatin The nucleoprotein material of chromosomes. Chromatin is essentially the substance of chromosomes. It is made…
- Exonuclease An enzyme that cleaves nucleotide bases sequentially from the free ends of a nucleic acid (DNA or RNA)
- Blister, fever Fever: A small sore situated on the face or in the mouth that causes pain, burning, or itching before…
- Leg, upper The upper leg is the superior (top) segment of the leg: the part above the knee. As compared to the lower leg…
- Typhus, scrub A mite-borne infectious disease caused by a microorganism, Rickettsia tsutsugamushi, characteristically with…
- Herbicide chemical 2,4-DCP A poisonous chemical used to produce a herbicide. 2,4-DCP (short for 2,4-dichlorophenol) is employed in the…
- Female genitalia The genital organs of the female. These are usually separated by convention into the external and internal…
- Whitmore-Jewett staging system A staging system for prostate cancer. See Jewett staging system
- Craniopagus parasiticus Conjoined twins joined at the head (craniopagus) in which a rudimentary head (with little or no body) is…
- Blunted affect See: Flat affect
- Fever, trench Fever, trench: A disease borne by body lice that was first recognized in the trenches of World War I, when it…
- Replication A turning back, repetition, duplication, reproduction