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).
Fetal infant
An extremely low birth weight infant. A very, small infant. One, for example, with a birth weight of 400 to 500 grams
Read the definitionRandom terms
Show more- Lumbar spinal stenosis Lumbar spinal stenosis: A condition whereby either the spinal canal (central stenosis) or vertebral foramen…
- Mutant An individual with a mutant (changed) gene.
- FMRP As stated in the entry for FMR1, FMRP is an acronym composed of the first letters of Familial Mental…
- Opportunistic microorganism A bacteria, virus, or fungus that takes advantage of certain opportunities to cause disease. Those…
- Bone cancer Bone cancer: A malignancy in bone. Primary bone cancer, one that begins in bone, is uncommon but it is not…
- Corrigan pulse A pulse that is full and then suddenly collapses. Named for the Irish physician Dominic John Corrigan…
- Abruption A sudden breaking off or away. Abruption of the placenta (abruptio placentae) is the premature separation of…
- Precocious puberty Precocious puberty is the unusually early development of secondary sexual features. The onset of sexual…
- Obesity, gynecoid >Gynecoid pelvis: A pelvis that is shaped like a woman's. >Gynecology: The study of the diseases of the…
- Deficiency, phenylalanine hydroxylase See Phenylalanine hydroxylase deficiency
- Medical directives, advance Advance directives preserve the person's right to accept or reject a course of medical treatment even after…
- Hypotonic solution A solution with a lower salt concentration than in normal cells of the body and the blood. As opposed to an…