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).
Fever, cat scratch
A bacterial infection due to a cat scratch seen most often today in people with HIV. The disease characteristically presents with swollen lymph nodes (lymphadenitis), sore throat, fatigue, and fever, chills, sweats, vomiting, loss of…
Read the definitionRandom terms
Show more- Subconjunctival hemorrhage Hemorrhage: A very common cause of a painless bloody eye usually first noticed by somebody else or by the…
- Urinary infection in children See: Urinary tract infection in children
- Pacemaker Pacemaker: A system that sends electrical impulses to the heart in order to set the heart rhythm. The…
- Hematophobia An abnormal and persistent fear of blood is called hematophobia. Sufferers of this very common phobia dread…
- Rhythm method Also known as fertility awareness, natural family planning, and periodic abstinence, this approach to…
- Nude mouse A mutant mouse said to be nude because it is hairless due to the presence two copies of the gene 'nu' (for…
- Rate, death The number of deaths in the population divided by the average population (or the population at midyear) is…
- Contrast sensitivity, visual The ability to perceive differences between an object and its background
- Hemorrhagic cyst This type of functional cyst occurs when bleeding occurs within a cyst. Symptoms such as abdominal pain on…
- Acinus, pulmonary The ending of a tiny airway in the lung, where the alveoli (air sacs) are located. In anatomy, an acinus is a…
- Vaginitis, yeast Infection of the vagina by a fungus known as Candida, characteristically causing itching, burning, soreness…
- Immune tolerance A state of unresponsiveness to a specific antigen or group of antigens to which a person is normally…