amphiblastula
noun
am·phi·blas·tu·la
¦amfə̇-
plural amphiblastulae
: a free-swimming larva of certain sponges that is essentially a blastula with small flagellated cells in one hemisphere and large nonflagellated cells in the other
Word History
Etymology
New Latin, from amphi- + blastula
First Known Use
1875, in the meaning defined above