Wiktionary
parametrium
n. (context anatomy English) All the connective tissue of the pelvic floor
Wikipedia
Parametrium
The parametrium is the fibrous tissue that separates the supravaginal portion of the cervix from the bladder. The parametrium (called cervical stroma in some texts) lies in front of the cervix and extends laterally between the layers of the broad ligaments.
The uterine artery and ovarian ligament are located in the parametrium.