cleavage spindle

cleav·age spin·dle

the spindle formed during the cleavage of a zygote or its blastomeres.

cleav·age spin·dle

(klēv'ăj spin'dĕl)
The spindle formed during the cleavage of a zygote or its blastomeres.
References in periodicals archive ?
Fertilization is internal and at deposition the first cleavage spindle has already formed.
Fertilized eggs of Cerebratulus lacteus were compressed to about 170% of their normal diameter, from just after first polar body formation but before the formation of the first cleavage spindle, until first cleavage was completed (Fig.