amphicytula

from The Century Dictionary.

• noun In embryology, the parent-cell (cytula) which results from that stage in the development of a holoblastic egg known as an amphimonerula, by the re-formation of a nucleus, and which passes by total but unequal segmentation of the vitellus (yolk) to the successive stages known as amphimorula, amphiblastula, and amphigastrula. See these words.