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).
Gene duplication
An extra copy of a gene. Gene duplication is a key mechanism in evolution. Once a gene is duplicated, the identical genes can undergo changes and diverge to create two different genes. A duplication is the opposite of a deletion…
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Show more- Tuberculosis, MDR Multidrug-resistant tuberculosis. See: Tuberculosis, antibiotic-resistant
- Disease, variant Creutzfeldt-Jakob Abbreviated vCJD. A human disease thought due to the same infectious agent as bovine spongiform…
- Peripheral iridectomy A surgical procedure in which a hole is made in the periphery (outer part) of the iris by removing a…
- Sequela A pathological condition resulting from a prior disease, injury, or attack. As for example, a sequela of…
- Adventitious Coming from an external source or occurring in an unusual place or manner. Not inherent, inherited or innate…
- Opportunistic condition A condition that occurs especially or exclusively in persons with a weak immune system due, for example, to…
- Dropsy An old term for the swelling of soft tissues due to the accumulation of excess water. In years gone by, a…
- Antisense DNA DNA normally has two strands, i.e., the sense strand and the antisense strand. In double-stranded DNA, only…
- Rh incompatibility The difference in Rh blood group types between an Rh negative mother and her Rh positive baby that leads to…
- Infant mineral requirements Minerals (calcium, phosphorus, magnesium, iron, iodine, copper and zinc) and trace elements (manganese…
- Laryngotomy Surgical opening of the larynx, the voice box
- Familial colorectal cancer A label applied to families that contain an unusual aggregation of members with cancer of the colon or rectum…