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).
Q.h. (on prescription)
Abbreviation for 'every hour.' On a prescription or doctor's hospital orders, q.h. means every hour. Also written qh (without the periods). From the Latin quaque meaning once + h for hour. However it is written, it is one of a number of…
Read the definitionRandom terms
Show more- Melomania A singular passion for music that is beyond all reason. From the French melomanie, from the Latin melos, song…
- Peromyscus maniculatus See: Deer mouse
- CpG island In molecular genetics, a short region of DNA rich in CpG sites, often located near the promoters of genes…
- Silicosis A form of lung disease resulting from occupational exposure to silica dust over a period of years. Silicosis…
- NICHD A silver-white metallic element. Long-term exposure to nickel, such as from jewelry, can cause a form of…
- Chromatin modelling See: Chromatin remodeling
- Drug, antimicrobial A drug used to treat a microbial infection. The term 'antimicrobial' is a general one that refers to a group…
- Rate, infant mortality The number of children dying under a year of age divided by the number of live births that year. The infant…
- Acinetobacter (Pronounced AH-sin-neto-bacter). A group of bacteria found in soil, water, and hospitals where they can cause…
- Category 5 storm See: Category five hurricane
- Gene, transporter A gene that allows drugs to enter cells or, in some cases, acts to keep them out. Transporter genes may…
- Tonsils Small masses of lymphoid tissue at the back of the throat, on either side of the throat