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.
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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).
Somnolence
Sleepiness, the state of feeling drowsy, ready to fall asleep. A person experiencing somnolence is somnolent and is acting somnolently. Somnolence, somnolent, and somnolently go back to the Latin 'somnus' meaning (please don't yawn)…
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Show more- Amino acid symbols Symbols that stand for the amino acids, the building blocks of protein. Each amino acid has both a…
- Vestibular apparatus The vestibule and three semicircular canals of the inner ear. Like an internal carpenter's level, these…
- Psychiatry The medical specialty concerned with the prevention, diagnosis, and treatment of mental illness…
- Glossal Of or pertaining to the tongue. Glossal is used as both an adjective and a compound word, as in hypoglossal…
- Babinski reflex An important neurologic test based, believe it or not, upon what the big toe does when the sole of the foot…
- Melittin The principal toxic component in bee venom. Melittin is a relatively short peptide consisting of 26 amino…
- Diarrhea, E. coli hemorrhagic Bloody colitis (inflammation of the bowel) caused by E. coli, usually by the strain E. coli 0157:H7. The…
- Hemi- Prefix meaning one half, as in hemiparesis, hemiplegia, and hemithorax. From the Greek hemisus meaning half…
- BPH A balance disorder that results in the sudden onset of dizziness, spinning, or vertigo when moving the head.
- Hyperparathyroidism Hyperparathyroidism: Too much parathyroid hormone resulting in abnormally high levels of calcium in the blood…
- Chest film Most common X-ray used to detect abnormalities in or within the thoracic cage, such as the lungs, heart…
- Nebulization, heated Administration of medication via fine spray that has been heated to increase its water content