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.
- 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).
Penis
The external male sex organ used to copulate and ejaculate semen and to convey urine outside the body. In Latin, the word 'penis' originally meant 'a tail.' The Latin 'penis' is related to the verb pendere meaning 'to hang down.' The penis…
Read the definitionRandom terms
Show more- Flexner Report 'Medical Education in the United States and Canada', quite possibly the most important written document in…
- Library, arrayed In genetics, arrayed libraries of DNA clones are used for many purposes, including screening for a specific…
- Absolute CD4 count The number of 'helper' CD4 T-lymphocytes in a cubic millimeter of blood. With HIV, the absolute CD4 count…
- PARK4 Familial Parkinson disease type 4
- Typhus, classic See: Typhus, epidemic
- Incontinence, rectal Inability to hold feces in the rectum due to failure of voluntary control over the anal sphincters with…
- Hematuria, gross Blood in the urine that can be seen with the naked eye. Hematuria may or may not be accompanied by pain, but…
- Parthenogenesis Development of a germ cell without fertilization. This is what happens in the formation of ovarian teratomas…
- ICSI Jaundice. At least one medical dictionary defines icterus as the presence of jaundice seen in the sclera of…
- ACE2 (angiotensin converting enzyme 2) An essential regulator of heart function. Also may be involved in the embryonic development of the heart. The…
- Mutant An individual with a mutant (changed) gene.
- Lymphoma, low-grade See: Low-grade lymphoma