These include uterine tone, the shape of the uterus, and the presence and size of the small sac containing the foetus, called the amnionic vesicle.    From Wordnik.com.  [Horsetalk.co.nz Headlines] Reference

The new Williams credits Clark with the idea that AFE is similar to anaphylaxis and with the suggestion that the name amniotic fluid embolism (or "amnionic," as Williams puts it) is a misnomer.    From Wordnik.com.  [Chicago Reader] Reference