MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
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).
Two-animal rule
A rule instituted by the US Food and Drug Administration (FDA) for the licensing of agents directed against diseases of low or no incidence. The two-animal rule states that, when agents such as an antibiotic or vaccine are needed for such…
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Show more- Yersinia pestis The bacteria that causes the bubonic plague which in the year 541 (as the Black Death) and later in the…
- Wilkins, Lawson American physician (1894-1963) who founded pediatric endocrinology. At Johns Hopkins Medical School in…
- Palliative care 1) Medical or comfort care that reduces the severity of a disease or slows its progress rather than providing…
- B variant GM2-gangliosidosis See: Tay-Sachs disease
- Amyotrophic lateral sclerosis (ALS) Amyotrophic lateral sclerosis (ALS): A classic motor neuron disease. Motor neuron diseases are progressive…
- Microphthalmia syndrome, Lenz Tattooing.
- Male internal genitalia The internal genital structures of the male that are concerned with reproduction, including the testis…
- Apraxia The inability to execute a voluntary motor movement despite being able to demonstrate normal muscle function…
- Anterior chamber The space in the eye that is behind the cornea and in front of the iris. The cornea is the outer…
- Hallucination, hypnagogic See: Hypnagogic hallucination
- Peri- Prefix meaning around or about. For example, pericardial is around the heart, and periaortic lymph nodes are…
- Explant 1. The original meaning: to transfer tissue from the body and place it in a culture medium for growth; and…