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).
Fear of the dark
Pathological fear of the dark, an abnormal and persistent dread of the dark. Sufferers experience undue anxiety even though they may rationally realize that the dark does not pose a threat commensurate with their fear. Fear of the dark is…
Read the definitionRandom terms
Show more- Wilms tumor An inherited disorder in which too much copper accumulates in the body. Although the accumulation of copper…
- OBS 1. Organic brain syndrome.2. Obstetricians, in the plural
- Pathologist, speech-language See: Speech-language pathologist
- Congenital cervicothoracic vertebrae synostosis See: Klippel-Feil sequence
- C3 (cervical vertebra) The third cervical (neck) vertebra from the top
- Q.h. (on prescription) Abbreviation for 'every hour.' On a prescription or doctor's hospital orders, q.h. means every hour. Also…
- Estrogen/progestin therapy Abbreviated EPT. A combination of the hormones estrogen and progestin. Taken by women, the estrogen in the…
- Xanthomatosis A condition in which fatty deposits occur in various parts of the body. These fatty deposits are called…
- Iridectomy The process of making a hole in the iris by surgically removing a full-thickness piece from the iris
- APC (medication) Aspirin, phenacetin, and caffeine (a pill containing all three)
- Shoulder dislocation Displacement of the ball of the shoulder joint (the top rounded portion of the upper arm bone, or humerus)…
- Vincent angina This is trench mouth, a progressive painful infection with ulceration, swelling and sloughing off of dead…