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).
Eyelids, adult ptosis of the
Drooping of the upper eyelids in adults, most commonly due to separation of the tendon of the lid-lifting (levator) muscle from the eyelid. This may occur with age, after cataract or other eye surgery, an injury, eye tumor or a…
Read the definitionRandom terms
Show more- Cornea The clear front window of the eye that transmits and focuses light into the eye. Although the cornea is clear…
- Huntington disease Huntington disease: An hereditary disorder with mental and physical deterioration leading to death. Although…
- Transfer RNA (tRNA) A class of RNA that has triplet nucleotide sequence complementary to the triplet nucleotide coding sequences…
- Nipple absence Medically called athelia, this is a rare condition but it is common in certain conditions. Athelia tends to…
- Pectoral muscles Muscles of the 'anterior chest' (the front of the chest). Familiarly called the pecs. The Latin 'pectus'…
- Julius Axelrod See: Axelrod, Julius
- Arg Arginine. See also: Amino acid symbols
- Cervical dystocia Difficult labor and delivery caused by mechanical obstruction at the cervix. Dystocia comes from the Greek…
- Intramuscular (IM) An intramuscular (IM) medication is given by needle into the muscle. This is as opposed to a medication that…
- Assembly and budding A portion of the processes by which new HIV is formed in infected host cells. Viral core proteins, enzymes…
- Unresectable Unable to be removed (resected) by surgery. To resect is to remove. At the time of diagnosis of esophageal…
- Attentional Relating to attention. The term is used in psychology and child development as, for example, early television…