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).
Para- (prefix)
A prefix with many meanings, including: alongside of, beside, near, resembling, beyond, apart from, and abnormal. For example, the parathyroid glands are called 'para-thyroid' because they are adjacent to the thyroid. For another example…
Read the definitionRandom terms
Show more- Carbohydrate Mainly sugars and starches, together constituting one of the three principal types of nutrients used as…
- Oneself, fear of An irrational fear of oneself, an intense self-fear that is groundless. Fear of oneself is termed…
- Pauling, Linus The alpha helix, the structure of most proteins, discovered by Linus Pauling and Robert Corey. See: Alpha…
- Infection, adenovirus Infection with one of a group of viruses responsible for a spectrum of respiratory disease as well as…
- Neuron, sensory See: Sensory neuron
- Descending pathway A nerve pathway that goes down the spinal cord and allows the brain to control movement of the body below the…
- Cox-2 inhibitor A type of drug that selectively blocks the enzyme cox-2 (cyclooxygenase-2). Blocking this enzyme impedes the…
- Nonagenarian Someone in his or her ninties, that is, between 90 and 99 years of age. See also: Age by decade
- Leuko- Prefix meaning white, as in leukocyte (white blood cell). Leuko- comes from the Greek 'leukos' meaning white…
- Water channel See: Aquaporin
- DR syndrome See: Okihiro syndrome
- Q in population genetics The frequency of the less common of two different alternative (allelic) versions of a gene. (The frequency of…