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).
Tricho- (prefix)
Pertaining to hair. As in trichobezoar (a hair ball), trichotillomania (compulsive hair pulling), trichoepithelioma (a tumor from a hair follicle), etc. From the Greek thrix, trichos, meaning hair. See also: Trich- (prefix)
Read the definitionRandom terms
Show more- Gustavson syndrome A disorder first reported in 1999 by Gustavson and colleagues as a new X-linked mental retardation syndrome…
- Celiac sprue See: Celiac disease
- Hay fever Hay fever: A seasonal allergy to airborne particles characterized by itchy eyes, runny nose, nasal…
- Otitis Inflammation of the ear. Depending upon which part of the ear is inflammed, there is otitis externa, otitis…
- Colpo- A group of diagnostic and therapeutic disciplines that are used together with conventional medicine. An…
- Neurosis A chronic disorder featuring irritability of the nervous system (nervousness) and characterized by anxiety…
- Interstitial radiation Radiation therapy in which a radioactive material is placed directly into a tumor.
- Rigor A word with two different but related meanings in medicine:1. A chill, usually with shivering, as at the…
- Bone mass density A measure of bone density. Loss of bone mass is due to osteopenia or, if more severe, to osteoporosis
- Penis, erection of the When the penis fills with blood and is rigid. The penis contains two chambers, called the corpora cavernosa…
- Cell, helper A type of T cell that participates in the immune response by recognizing foreign antigens and secreting…
- LN2 Liquid nitrogen