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).
SGA
Small for gestational age. SGA infants weigh 2500 g or less at birth and are considered to have intrauterine growth retardation (IUGR), given their gestational age. By contrast, an infant may weighs 2500 g or less simply because of…
Read the definitionRandom terms
Show more- Kidney stone Kidney stone: A stone in the kidney (or lower down in the urinary tract). Kidney stones are a common cause of…
- Spinal cord disease in diabetes Involvement of the spinal cord in people with diabetes. Most of the neurologic attention in diabetes mellitus…
- Holoprosencephaly A relatively common birth defect of the brain, which often also affects facial features, causing closely…
- Jackson Pratt drain See: JP drain
- Treponema pallidum The cause of syphilis, this is a microscopic bacterial organism called a spirochete, a worm-like…
- IV cholangiogram See: Intravenous cholangiogram
- Carcinogen A substance or agent that causes cancer. Related terms include the adjective 'carcinogenic' and the nouns…
- Vaccinia immune globulin A blood product rich in antibodies against vaccinia, the virus in the smallpox vaccine. Vaccinia immune…
- Nitrogenous base A molecule that contains nitrogen and has the chemical properties of a base. The nitrogenous bases in DNA are…
- Dendrite A short arm-like protuberance from a nerve cell (a neuron). Dendrites from neurons next to one another are…
- Prosthesis, auditory See: Auditory prosthesis
- Brainstem auditory evoked potentials See: ABR test