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).
DNS
On a prescription, Do Not Substitute. If a physician orders a particular drug and writes DNS on the prescription, that tells the pharmacist not to substitute a generic version or any other drug for the prescribed drug
Read the definitionRandom terms
Show more- Therapeutic abortion An abortion that is brought about intentionally. Also called an artificial or induced abortion. As opposed to…
- Neutral posture The posture when the joints are not bent and the spine is aligned and not twisted. Working in neutral…
- Extracorporeal (ECMO) A life support system that circulates the blood through an oxygenating system. ECMO is like a…
- Adjuvant chemotherapy Chemotherapy given after tumor surgery. The idea underpinning adjuvant chemotherapy is that the chemotherapy…
- Secondary amenorrhea The abnormal cessation of menstruation. Amenorrhea is conventionally divided into primary and secondary…
- Ligament, patellar See: Patellar tendon
- Succumb To lose the will to oppose something or to give up and accept something that you first opposed. In the…
- Dysplastic nevus An atypical mole whose appearance is different from that of a common ordinary mole. Dysplastic nevi tend to…
- Genitalia The male and female reproductive organs. The genitalia include internal structures such as the ovary, and…
- Dormant tuberculosis See: Tuberculosis, dormant. See also: Tuberculous meningitis.
- FALDH deficiency Also known as the Sjogren-Larsson syndrome, this is a genetic (inherited) disease usually characterized by a…
- Smell disorder See: Olfactory disorder