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).
Sinus
1. An air-filled cavity in a dense portion of a skull bone. The sinuses decrease the weight of the skull. The sinuses are formed in four right-left pairs. The frontal sinuses are positioned behind the forehead, while the maxillary sinuses…
Read the definitionRandom terms
Show more- Proxy, health care A health care proxy is one form of advance medical directive. Advance medical directives pertain to treatment…
- Melanocyte A pigment-producing cell in the skin, hair and eye that determines their color. The pigment that melanocytes…
- Tryptophan An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, tryptophan is…
- Hypoplasia of the thymus and parathyroids See: DiGeorge syndrome
- Fear of blushing An abnormal and persistent fear of blushing. Sufferers of this fear experience undue anxiety even though they…
- Melanoma, lentigo maligna One of the four clinical types of malignant melanoma and the slowest growing one. It typically begins as a…
- Ventricle, right The ventricles are the two lower chambers of the heart. The right ventricle is the chamber that receives…
- Allergy, honey bee See: Honey bee allergy
- Dynein A family of microtubule motor proteins that derive energy from ATP (adenosine triphosphatase) activity. The…
- Tonsils Small masses of lymphoid tissue at the back of the throat, on either side of the throat
- Seizure, petit mal See: Petit mal
- MPS Abbreviation for mucopolysaccharidosis