|1.||informal the separation between a woman's breasts, esp as revealed by a low-cut dress|
|2.||a division or split|
|3.||(of crystals) the act of splitting or the tendency to split along definite planes so as to yield smooth surfaces|
|4.||embryol Also called: segmentation (in animals) the repeated division of a fertilized ovum into a solid ball of cells (a morula), which later becomes hollow (a blastula)|
|5.||the breaking of a chemical bond in a molecule to give smaller molecules or radicals|
|6.||geology the natural splitting of certain rocks, or minerals such as slates, or micas along the planes of weakness|
cleavage cleav·age (klē'vĭj)
A series of cell divisions in the ovum immediately following fertilization. Also called segmentation.
The splitting of a complex molecule into two or more simpler molecules. Also called scission.
The linear clefts in the skin, indicating the general direction of the fibers in the dermis.
|cleavage (klē'vĭj) Pronunciation Key