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.
- 100% free
- No registration
- No intrusive ads
- Privacy by design
- Mobile friendly
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).
Sub-
Prefix meaning meaning under, below, less than normal, secondary, less than fully. As in subacute, subaortic stenosis, subarachnoid, subclavian, subclinical disease, subcutaneous, subdural, subglottis, subjacent, sublingual, subluxation…
Read the definitionRandom terms
Show more- Colon cancer, family history of The presence of a history of colorectal cancer in a family. The colon cancer risk is higher if an immediate…
- Personality disorder, borderline A serious mental illness characterized by pervasive instability in moods, interpersonal relationships…
- Lining, uterine The inner layer of the uterus (womb); the cells that line the womb; anatomically termed the endometrium. This…
- ACS (American Cancer Society) A 'nationwide community-based voluntary health organization dedicated to eliminating cancer as a major health…
- Jadassohn-Lewandowski Syndrome This syndrome is a form of what is called elephant nails from birth (pachyonychia congenita). The…
- Resistance, antibiotic The ability of bacteria and other microorganisms to withstand an antibiotic to which they were once sensitive…
- Ureaplasma A bacterium that commonly infects the urogenital tract and can cause premature birth or spontaneous abortion…
- NIDA Stands for the National Institute on Drug Abuse, one of the National Institutes of Health in the U.S., whose…
- Small saphenous vein The smaller of the two saphenous veins, the principal veins that run up the leg superficially (near the…
- Double-jointed Popular term to describe a joint that is unusually flexible. Medically, the joint is said to be…
- Clasped thumbs and mental retardation A syndrome with the following characteristic features: (1) neurologically: mental retardation and aphasia…
- Blood in the eye Medically known as a subconjunctival hemorrhage. A very common cause of a painless bloody eye usually first…