Cleavage in general refers to a division or separation of form. Its usage is heavily dependent on cultural context, where it may refer to:
- Partial exposure of part of the body:
- Cleavage (crystal), in mineralogy and materials science, is a process of splitting a single crystal.
- Cleavage (geology), Foliation perpendicular to stress as a result of ductile deformation. e.g. shales (shists)
- Cleavage (embryo), in embryology, is the division of cells in the early embryo.
- Cleavage (fiber), in optical fibers.
- Teeth cleavage or tooth cleavage, slang for Diastema (dentistry), the gap between a person's two front teeth.
- In cell biology, the Cleavage furrow is the indentation that begins the process of cleavage, by which animal cells undergo cytokinesis.
- Bond cleavage in chemistry and biochemistry
- Cleavage (politics) The divisions of society that cause people to vote differently