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).
Smallpox vaccination adverse reaction
An adverse event occurring after smallpox vaccination (vaccinia). Smallpox vaccination is a relatively safe, effective preventative against smallpox. However, in a number of individuals, smallpox vaccination can result in untoward effects…
Read the definitionRandom terms
Show more- Children's immunizations Immunizations: In the United States, it is recommended that all children receive vaccination against: >…
- Urination, difficulty See: Dysuria
- Morton's toe See: Morton's syndrome
- Syndrome, Aase-Smith II See: Aase-Smith syndrome II
- Homologous The relationship between two chromosomes that are paired and so are homologs of each other.
- Syndrome, MELAS MELAS is the acronym for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes. MELAS is a…
- ASCUS An acronym for Atypical Squamous Cells of Undetermined Significance. This term is used in the Bethesda System…
- BUN Blood urea nitrogen. A measure primarily of the urea level in blood. Urea is cleared by the kidney and…
- Zinc excess Too much zinc can cause gastrointestinal irritation (upset stomach), interfere with copper absorption and…
- Ptosis of the eyelids, congenital Drooping of the upper eyelids at birth. The lids may droop only slightly or they may cover the pupils and…
- Litmus A pigment used as a test for acidity and alkalinity. Litmus paper turns red in acid and blue in an alkaline…
- Traumatology The branch of surgery that deals with trauma patients and their injuries. Patients who have suffered…