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).
Mesoderm
One of the three primary germ cell layers -- the other two are the ectoderm and endoderm -- in the very early embryo. The mesoderm is the middle layer. It differentiates to gives rise to a number of tissues and structures including bone…
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Show more- Fear of being buried alive An abnormal and persistent fear of being buried alive is called taphephobia. A phobia is an unreasonable sort…
- Nexus A connection or link. A causal connection. A connected series. 'Nexus' comes from the Latin 'nectere' meaning…
- Erb palsy A form of brachial plexus palsy in which there is paralysis of the muscles of the upper arm and shoulder…
- Familial ALS ALS (amyotrophic lateral sclerosis) in which there a family history of the disease. Familial ALS constitutes…
- Bug, kissing See: Kissing bug
- Nicotine Nicotine: An alkaloid (a nitrogen-containing chemical) made by the tobacco plant or produced synthetically…
- CD8+ T cell See: Cytotoxic T-lymphocyte
- Enhanced external counterpulsation A non-invasive out-patient treatment for heart disease and, in particular, for angina (chest pain due to an…
- Entomophobia An abnormal and persistent fear of insects. Sufferers experience anxiety even though they realize that most…
- NIDCD Stands for National Institute on Deafness and Other Communication Disorders, one of the US National…
- Hydrocephalus, communicating Hydrocephalus in which there is no obstruction to the flow of the cerebrospinal fluid (CSF). Specifically…
- Pinel system The policy of treating the mentally ill in hospitals and other institutions humanely and without the use of…