a pregnancy in which the fetus ceases to develop very early on. The amniotic sac may only contain fluid and no fetal tissue when the miscarriage occurs. This term is seldom used nowadays; a better term is early embryonic loss or demise.
A description of the fertilized egg which fails to develop. It appears as a fluid filled cell attached to the uterus when viewed through x-ray or ultrasound. A blighted ovum results in many first trimester spontaneous abortions.