vaginal septum

Vaginal septum is a partition of tissue has formed during fetal development that divides the vagina into two parts.

Person 1. My newborn has a vagina septum.
Person 2. I had one myself and got it surgically removed!
Person 1. What even is a vaginal septum?

Person 2. Oh it’s just when a fetus is developing and the vagina ends up parting into two.