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).
Nyctophobia
Pathological fear of the dark, an abnormal and persistent dread of the dark. Sufferers experience anxiety even though they may rationally realize that the dark does not pose a threat commensurate with their fear. Formed from the Greek…
Read the definitionRandom terms
Show more- Papilla, fungiform The fungiform papillae are broad flat structures that house taste buds in the central portion of the dorsum…
- Polydactyly (hexadactyly) The presence of an extra, sixth finger or toe, a very common congenital malformation (birth defect). This is…
- Bone mineral density BMD, a measure of bone density, reflecting the strength of bones as represented by calcium content. The BMD…
- Gerstmann-Straussler disease See: Gerstmann-Sträussler-Scheinker syndrome
- Membrane, epiretinal See: Macular pucker
- MRA The magnetic resonance angiogram, or MRA, is a noninvasive test that has demonstrated usefulness in defining…
- Fong disease See Nail-patella syndrome
- Recommended Daily Allowance Popular name for the Recommended Dietary Allowance (RDA)
- Stroke index A cardiodynamic measure. Stroke volume is the amount of blood the left ventricle ejects in one beat, measured…
- CCR5 A chemokine receptor found on monocytes and lymphocytes that serves as the coreceptor for HIV. HIV strains…
- Carbohydrate intake, infant Carbohydrates (glucose, lactose, sucrose, galactose, etc.) are sugars or several sugars linked together…
- Multifactorial Multiple factors. Multifactorial inheritance is the type of hereditary pattern seen when there is more than…