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).
Whitehead
A familiar term for what is medically called a closed comedo. A comedo, the primary sign of acne, consists of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). A whitehead is a comedo…
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Show more- Angiosarcoma A type of cancer that begins in the lining of blood vessels. This type of tumor tends to be aggressive, recur…
- Basal temperature 1) Usually, a person's temperature on awakening in the morning. As changes in basal temperature accompany…
- Quaque die (on prescription) Seen on a prescription, qd (or, written with periods, q.d.) means one a day (from the Latin quaque die). The…
- Vaccinia, congenital See Congenital vaccinia
- Selenocysteine An amino acid in which selenium takes the place of sulfur in the amino acid cysteine. Its formula is…
- Primary care The 'medical home' for a patient, ideally providing continuity and integration of health care. All family…
- AN The military designation for hydrogen cyanide. See: Cyanide
- Spanish disease Syphilis. Depending upon someone's thoughts as to where the disease came from, syphilis was also known as the…
- Trismus-pseudocamptodactyly syndrome See: Hecht syndrome
- Discordant couple A pair of long-term sexual partners in which one has a sexually transmitted infection and the other does not…
- Oncology The field of medicine devoted to cancer. In clinical oncology, there are three primary disciplines: >…
- Complex partial seizure A form of partial seizure during which the person loses awareness. The patient does not actually become…