There are multiple definitions:

  1. unpredictability index(English)

  2. uteroplacental insufficiency(English)

    • caused by disorders such as preeclampsia, maternal smoking, and abnormalities of uteroplacental development. Leads to a permanent decrease in the expression of Pdx-1 in the beta cell that is associated with silencing histone modifications at the proximal promoter of Pdx-1 in the fetal and early postnatal period followed by an increase in DNA methylation in the same region by 6–10 months of age
    • IUGR
    • Ovary and uterus, Epigenetics, Pregnancy
    • https://doi.org…01383-0.00014-1