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).
Chromatin
The nucleoprotein material of chromosomes. Chromatin is essentially the substance of chromosomes. It is made up of DNA attached to a protein structure, together with chromosomal RNA. Chromatin exists in two states, euchromatin and…
Read the definitionRandom terms
Show more- Speculum, vaginal An instrument used to widen the opening of the vagina so that the cervix is more easily visible. 'Speculum'…
- Hypothalamic hamartoma A benign tumor of the hypothalamus, the area of the brain that controls body temperature, hunger, and thirst…
- Aniso- Unequal, unlike, or dissimilar. As in anisocoria, anisocytosis, and anisometropia. From the Greek anisos…
- Emergency postcoital contraception See: Emergency contraception
- Foramen, neural See: Intervertebral foramen
- Radius In anatomy, the radius is the smaller of the two bones on the thumb side of the forearm. (The bigger one is…
- Trigger Something that either sets off a disease in people who are genetically predisposed to developing the disease…
- Xeroderma pigmentosum A genetic disease characterized by such extraordinary sensitivity to sunlight that it results in the…
- Oral cholecystogram Oral cholecystogram: Abbreviated OCG. An x-ray procedure for diagnosing gallstones. The patient takes…
- Peri-appendiceal See: Periappendiceal
- Gingivitis, necrotizing This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…
- Gynecology The branch of medicine particularly concerned with the health of the female organs of reproduction and…