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).
Null mutation
A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a functional protein product. For example, a null mutation in a gene that usually encodes a specific enzyme leads to the production of…
Read the definitionRandom terms
Show more- Albinism, oculocutaneous An hereditary disorder characterized by deficiency of the pigment melanin in the eyes, skin and hair. The…
- Gyno- Combining form pertaining to women. From the Greek gyno, gynaikos meaning woman
- Mycobacteria Plural of mycobacterium
- Errors of metabolism, inborn Heritable (genetic) disorders of biochemistry. Examples of inborn errors of metabolism include albinism…
- Hydroxyurea In Greek mythology, a goddess considered to be the guardian or personification of health. Hygieia was the…
- PCBs PolyChlorinated Biphenyls, a mixture of up to 209 chlorinated chemicals. Although PCBs are no longer produced…
- Deficiency, lactase Not enough of an enzyme called lactase in the small intestine to digest lactose, a prominent component of…
- Sleep drug Any drug used to help sleep. Most prescription sleep drugs are sedative hypnotic agents. They include Valium…
- AP AP is a versatile abbreviation. It serves in cardiology to abbreviate angina pectoris (AP) and arterial…
- BRCA breast cancer gene Breast cancer gene: One of several genetic mutations linked to breast cancer and ovarian cancer. There is now…
- Varco See: Varco, Richard L.
- Spock, Benjamin (1903-1998) American pediatrician whose book on 'Baby and Child Care' which first appeared in 1946 was one of…