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).
Optic nerve pathways
The left and right branches of the optic nerves join behind the eyes, just in front of the pituitary gland, to form a cross-shaped structure called the optic chiasma. Within the optic chiasma, some of the nerve fibers cross. The fibers…
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Show more- Basal temperature 1) Usually, a person's temperature on awakening in the morning. As changes in basal temperature accompany…
- Mild cognitive impairment Abbreviated MCI. A brain disorder in which thinking abilities are mildly impaired. Individuals with mild…
- Stirrup The stapes, one of the three bones in the middle ear. See: Stapes
- Antibody An immunoglobulin, a specialized immune protein, produced because of the introduction of an antigen into the…
- H (drug caution code) Abbreviation standing for habitforming on a medication that indicates caution because the medication may…
- ASA (drug caution code) Abbreviation on a medication that indicates it contains acetylsalicylic acid (aspirin). This special caution…
- Attenuated Weakened, diluted, thinned, reduced, weakened, diminished. The use of 'attenuated' in medicine is not new. In…
- Diabetic retinopathy A common complication of diabetes affecting the blood vessels in the retina (the thin light-sensitive…
- PVC Premature ventricular contraction. See: Extrasystole
- Gottron sign A scaly, patchy redness over the knuckles seen in patients with dermatomyositis, an inflammatory muscle…
- Reactive arthritis Reactive arthritis: A chronic form of arthritis featuring the following three conditions: (1) inflamed…
- Genome, yeast See: Yeast genome