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).
Ortho- (prefix)
Prefix meaning straight or erect. From the Greek 'orthos' that means just that: straight or erect. Examples of terms involving ortho- include orthodontics (straightening the teeth), orthopaedics (straightening the child), orthopnea…
Read the definitionRandom terms
Show more- Dermicidin A potent anti-infective agent that is a natural component of sweat. The first antimicrobial agent found that…
- Ptosis of the eyelids, congenital Drooping of the upper eyelids at birth. The lids may droop only slightly or they may cover the pupils and…
- Bicuspid Having two flaps or cusps. The heart valve that is called the bicuspid valve is located between the left…
- Childbed fever Fever due to an infection usually of the placental site within the uterus. The fever is also called…
- PARK8 Familial Parkinson disease type 8
- Immunization, Td Td is the vaccine given to children over six and adults as boosters for immunity to diphtheria and tetanus
- Selenocysteine An amino acid in which selenium takes the place of sulfur in the amino acid cysteine. Its formula is…
- Tube feeding See: Enteral nutrition
- Wezand See: Weasand
- Pachyonychia congenita with natal teeth This is a type of pachyonychia congenita (elephant nails from birth) in which teeth are evident at birth. It…
- Leptomeningeal Having to do with the leptomeninges, the two innermost layers of tissues that cover the brain and spinal…
- Postmortem examination An autopsy. Also called a necropsy. Postmortem examinations have been done for more than 2,000 years but…