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).
Error, beta
The statistical error (said to be 'of the second kind' or type II) made in testing an hypothesis when it is concluded that a treatment or intervention is not effective when it really is. Sometimes referred to as a false negative
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- Body mass index A key index for relating a person's body weight to their height. The body mass index (BMI) is a person's…
- Surface EMG A technique in which electrodes are placed on (not into) the skin overlying a muscle to detect the electrical…
- Adam's apple A familiar anatomic feature in the front of the neck that is due to the forward protrusion of the thyroid…
- Sleep, twilight Sleep, twilight: A term applied to the combination of analgesia (pain relief) and amnesia (loss of memory)…
- Premature menopause Premature menopause: Menopause (permanent cessation of menses) occurring before age 40 due to ovarian…
- Post-nasal drip Mucous accumulation in the back of the nose and throat leading to or giving the sensation of mucus dripping…
- Q_h (on prescription) If a medicine is to be taken every so- many hours, it is written 'q_h'; the 'q' standing for the Latin word…