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).
Trochlear nerve
The trochlear nerve controls the superior oblique muscle of the eye, one of the extraocular muscles, the muscles that move the eye. Paralysis of the trochlear nerve results in rotation of the eyeball upward and outward (and, therefore…
Read the definitionRandom terms
Show more- Fibril The diminutive of fiber. A small fiber, a fine thread
- Temporal arteritis Also called giant cell arteritis or cranial arteritis, this is a serious disease characterized by…
- Disease, maple syrup urine See: Giant hypertrophic gastritis.
- Stapes A stirrup-shaped bone in the middle ear. The stapes transmits sound vibrations from the incus, another little…
- P in population genetics The frequency of the more common of two different alternative (allelic) versions of a gene. (The frequency of…
- Rate, mortality A death rate. There are a number of different types of mortality rates as, for examples, the following: >…
- Heparin, low-weight A newer form of the drug heparin (brand name: Lovenox, Fragmin) that has a lower molecular weight than normal…
- EGF Epidermal growth factor. A polypeptide (small protein) that is a powerful mitogen. (It stimulates cells to…
- Osteoclastoma A type of bone tumor characterized by massive destruction of bone near the end (epiphysis) of a long bone…
- Albinism, oculocutaneous An hereditary disorder characterized by deficiency of the pigment melanin in the eyes, skin and hair. The…
- Metatarsophalangeal Referring to both the metatarsus and the phalanges of the toes
- Hypoxic Pertaining to hypoxia, a subnormal concentration of oxygen.