"Placental" refers to something related to the placenta, which is an organ that develops in the womb during pregnancy to support and nourish the growing baby. Full definition
Moreover, the risk of placental abruption only increases if a person has had previous trauma, however minor. (verywellfamily.com)
Senior author, Professor Anjali Goswami (UCL Genetics, Evolution & Environment and UCL Earth Sciences), said: «Our findings refute those of other studies which overlooked the fossils of placental mammals present around the last mass extinction. (sciencedaily.com)
Symptoms of placental abruption include abdominal pain, contractions, and vaginal bleeding. (verywellfamily.com)