cleavage

详细解释:n. 劈开, 裂片, 分裂
【化】 解理
【医】 裂, 分裂; 卵裂

英语解释：

名词 cleavage:

the state of being split or cleftthe breaking of a chemical bond in a molecule resulting in smaller molecules(embryology) the repeated division of a fertilised ovum同义词：segmentation