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).
Lethal
Deadly, fatal, capable of causing death, death-dealing. The word 'lethal' comes from the Latin 'letum' meaning 'death or destruction.
Read the definitionRandom terms
Show more- Oryzomys palustris See: Rice rat
- Uterine rupture A tear of the uterus, an uncommon but very serious situation that may result in hysterectomy, urologic…
- Myomectomy Surgery to remove a fibroid from the uterus. A fibroid, or leiomyoma, is a benign tumor that arises from the…
- Osteology The study of bones. The branch of anatomy or physical anthropology that deals with bones. Bone-ology
- SiRNA Abbreviation for small inhibitory RNA, a short sequence of RNA which can be used to silence gene expression
- Pelvic Having to do with the pelvis, the lower part of the abdomen, located between the hip bones
- Disease, fifth See Gaucher disease, type 1.
- STEP procedure See: Serial transverse enteroplasty
- Snoring Snoring: A rough rattling noise made on inspiration during sleep by vibration of the soft palate (the back of…
- FTT Failure to thrive. Refers to a child whose physical growth is significantly less than that of peers. There is…
- Botulism Botulism: An uncommon but potentially very serious illness, a type of food poisoning, that produces paralysis…
- Low blood sugar A low blood level of the sugar glucose. Also called hypoglycemia. Hypoglycemia is only significant when it is…