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).
Voluntary
Done in accordance with the conscious will of the individual. The opposite of involuntary. The terms 'voluntary' and 'involuntary' apply to the human nervous system and its control over muscles. The nervous system is divided into two parts…
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Show more- Postmenopausal After the menopause. Postmenopausal is defined formally as the time after which a woman has experienced…
- Mycosis fungoides A type of non-Hodgkin's lymphoma that first appears on the skin. Also called cutaneous T-cell lymphoma.
- Pressure neuropathy Neuropathy: 'Pinching' a nerve by putting too much pressure on it. For example, the sciatic nerve may be…
- Ciliary muscle One of the muscles that relax the zonules to enable the lens to change shape for focusing. The zonules are…
- Quaque die (on prescription) Seen on a prescription, qd (or, written with periods, q.d.) means one a day (from the Latin quaque die). The…
- Gout, tophaceous A form of chronic gout whereby nodular masses of uric acid crystals (tophi) are deposited in different soft…
- Pulse, water hammer A jerky pulse that is full and then collapses because of aortic insufficiency (when blood ejected into the…
- Syndrome, nervous colon A common gastrointestinal disorder involving an abnormal condition of gut contractions (motility)…
- Empyema The presence of pus in the pleural space which is between the outer surface of the lung and the chest wall…
- Biofluid A biological fluid. Biofluids can be excreted (such as urine or sweat), secreted (such as breast milk or…
- Varicocele A common scrotal condition characterized by elongation and enlargement of the network of veins leaving the…
- Carotid endarterectomy Endarterectomy (a surgical procedure designed to clean out material occluding an artery) done on the carotid…