Dictionary > Polymenorrhoea

Polymenorrhoea

Definition
noun
A menstrual cycle disorder experienced by certain women, and is characterized by menstrual cycles with intervals of 21 days or fewer
Supplement
Menstruation is the recurring discharge of blood, cervical mucus, vaginal secretions, and endometrial tissue of a nonpregnant females of humans and other animals (e.g. certain primates, shrews, and bats.1 There are instances though when menstrual period is different from the norm. For instance, polymenorrhoea, oligomenorrhoea, and amenorrhoea are menstrual disorders that are characterized by the disorders of the menstrual cycle length. Polymenorrhoea is the term used to refer to a menstrual cycle disorder wherein the cycles have intervals of 21 days or fewer. In women, the normal interval length (i.e. between the first day of a menstrual period and the first day of the next) is 21 to 45 days in young women, and 21 to 31 days in adults (an average of 28 days).2 In contrast, the menstrual cycle disorder, oligomenorrhoea, pertains to infrequent periods, i.e. intervals exceeding 35 days.
Variant(s):

  • polymenorrhea (US spelling)

See also:

  • menstruation
  • menstrual cycle
  • hypermenorrhea
  • hypomenorrhea
  • oligomenorrhea
  • amenorrhoea
  • Reference(s):

    1 Lopez, K. H. (2013). Human Reproductive Biology. Academic Press. p. 53.

    2 Menstruation. Retrieved from https://en.wikipedia.org/wiki/Menstruation.


    You will also like...

    Sensory systems
    Sensory Systems

    A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..

    An artist's depiction of the origin of amphibians
    Amphibians & Early Reptiles

    Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..

    Buttress roots
    Roots

    This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

    Structural depiction of catalase, an enzyme
    Protein Activity and Cellular Metabolism

    Proteins have a crucial role in various biological activities. Get to know how proteins are able to perform as enzymes, ..

    A chart depicting Mendel's Law of Dominance
    Mendel’s Law & Mendelian Genetics

    One of Mendel’s law of inheritance is the “law of dominance”. Read this tutorial to know more about this form of i..

    New Zealand - Biodiversity fauna
    New Zealand’s Biodiversity

    Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..