Delayed cord clamping is simply the act of not cutting the umbilical cord immediately after birth (this cord is what helps the placenta feed the baby in the womb). (babygaga.com)
Your partner or birthing coach can then cut the umbilical cord between the two clamps. (pregnancy-info.net)
Sometimes cutting the umbilical cord too close at birth can cause an umbilical hernia, but it is generally considered an inherited defect. (lowchensaustralia.com)