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).
Heterochromatin
Chromosomal material that is darkly staining and tightly coiled throughout the cell cycle and that is, for the most part, genetically inactive. There are two types of heterochromatin: constitutive heterochromatin and facultative…
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Show more- Blindness, night Impaired vision in dim light and in the dark, due to impaired function of specific vision cells (namely, the…
- Gynecoid pelvis The gynecoid pelvis is one that is generally characteristic of a woman in its bone structure and therefore…
- Orphan disease A disease which has not been 'adopted' by the pharmaceutical industry because it provides little financial…
- Ejaculate To ejaculate is to release semen during an orgasm in a male. The ejaculate (used as a noun) is the semen.
- Scrub in To wash the hands and forearms very thoroughly, as for surgery. To scrub in implies the use of a brush (and…
- Eponym Something named after someone. For example, a condition called Shiel's syndrome might be named after someone…
- Acute bacterial prostatitis Prostatitis: Inflammation of the prostate gland of sudden (acute) onset due to bacterial infection. The…
- CMV (cytomegalovirus) A virus that infects 50-85% of adults in the US by age 40 and is also the virus most frequently transmitted…
- Gout, tophaceous A form of chronic gout whereby nodular masses of uric acid crystals (tophi) are deposited in different soft…
- Anticipatory grief The normal mourning that occurs when a patient or family is expecting a death. Anticipatory grief has many of…
- Tarsus Any broad flat surface. The flat of the eyelid is called the tarsus, as is the base of the heel. The bones in…
- Rosacea Rosacea: A chronic skin disease that affects the middle third of the face with persistent redness over the…