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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Hydroxytryptamine
See: Serotonin
Read the definitionRandom terms
Show more- Rib >True ribs: The first seven ribs attach to the sternum (the breast bone) in the front and are known as true…
- Heterotaxy The abnormal placement of organs due to failure to establish the normal left-right patterning during…
- Pax3 One in a family of Pax genes involved in regulating embryonic development at the level of transcription. The…
- Bursitis, septic A bursa is a closed fluid-filled sac that functions as a gliding surface to reduce friction between tissues…
- Dysphonia, spastic See: Spasmodic dysphonia
- CHEK2 A gene on chromosome 22q that encodes a kinase enzyme and influences a person's susceptibility to breast…
- Radioiodine An isotope of the chemical element iodine that is radioactive. Radioiodine is used in diagnostic tests as…
- Pulmonary tuberculosis See: Tuberculosis, pulmonary.
- X-rays during pregnancy See: Prenatal radiation exposure
- Lacuna A small pit, cavity, defect or gap
- Breast development, early The beginning of breast development at puberty is known medically as thelarche. It is now a normal event at…
- White cell differential, automated A machine-generated percentage of the different types of white blood cells, usually split into granulocytes…