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).
Respiratory system
The organs that are involved in breathing. These include the nose, throat, larynx, trachea, bronchi, and lungs
Read the definitionRandom terms
Show more- Resistance, aspirin See: Aspirin resistance
- Breslow thickness A method for determining the prognosis with melanoma. The thickness of a melanoma is related to the 5-year…
- Prognostic 1. (adjective) In medicine, relating to the prognosis of a disease. For example, a favorable prognostic…
- Streptococcus pyogenes A common bacteria of the skin that causes strep throat (streptococcal pharyngitis), impetigo, other skin…
- Nervous system, autonomic Part of the nervous system that was once thought to be functionally independent of the brain. The autonomic…
- Bowen disease An early stage of skin cancer. Bowen's disease is medically the same as 'squamous cell carcinoma in situ.'…
- Luteinizing hormone-releasing hormone A hormone that controls sex hormones in men and women. Also called LHRH.
- Congenital hemolytic jaundice Jaundice: Known also as hereditary spherocytosis (HS), this is a genetic disorder of the red blood cell…
- Nipple shield A cap or dome, usually made today of plastic (formerly, rubber), placed over the nipple and areola during…
- Virulent Extremely noxious, damaging, deleterious, disease-causing (pathogenic). Marked by a rapid, severe, and…
- Inhibitory RNA See: RNA inactivation; and RNA interference
- Myelin The fatty substance that covers and protects nerves. Myelin is a layered tissue that sheathes the axons…