Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “dysfunctional uterine bleeding”

dysfunctional uterine bleeding

noun [U] /dɪsˌfʌŋk.ʃənəl ˌjuː.tər.aɪn ˈbliːd.ɪŋ/ US  /dɪsˈfʌŋk.ʃə.nəl ˈjuː.t̬ər.ən ˈbliː.dɪŋ/ (also DUB) specialized
bleeding from the vagina that is not regular or normal and is not due to infection, pregnancy, or a tumour: Dysfunctional uterine bleeding is usually caused by abnormal changes in hormone levels.Diseases of the reproductive system
(Definition of dysfunctional uterine bleeding noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Word of the Day


physical activity that you do to make your body strong and healthy

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More