MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
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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).
Gonad
A reproductive gland (ovary or testis) that produces germ cells (gametes). In embryonic life, the gonad in males and females is initially identical. This gonad is said to be 'indifferent' before it differentiates into a definitive testis…
Read the definitionRandom terms
Show more- Petasites vulgaris See: Butterbur
- Immunization, pneumococcal One of the two polio vaccines that are available: oral polio vaccine (OPV) and inactivated polio vaccine…
- Neo- (prefix) Prefix meaning new. From the Greek 'neos', new, young, fresh, recent. Examples of terms starting with 'neo-'…
- Genital wart A wart in the moist skin of the genitals or around the anus. Genital warts are due to a human papillomavirus…
- Pernicious anemia Pernicious anemia: A blood disorder caused by inadequate vitamin B12 in the blood. Patients who have this…
- Retinal artery, central The blood vessel that carries blood into the eye and supplies nutrition to the retina. The counterpart to the…
- Chloroacetophenone A riot control agent or 'tear gas.' See: Riot control agent poisoning
- Ethylene glycol poisoning Poisoning from ethylene glycol (a clear, colorless, odorless liquid with a sweet taste) that can produce…
- Taenia asiatica Taenia solium.
- Hairball A wad of swallowed hair. Hairballs can sometimes be found to cause blockage of the digestive system…
- Infection, hospital-acquired An infection caught while hospitalized. The medical term for a hospital-acquired infection is 'nosocomial.'…
- Head and neck cancer Head and neck cancer: The common carcinomas of the oral cavity, pharynx, and larynx as well as other tumors…