To form or deposit in strata, or layers, as substances in the earth; to arrange in strata.
- To form, arrange, or deposit in layers.
- To preserve (seeds) by placing them between layers of moist sand or similar material.
- To arrange or separate into castes, classes, or social levels.
- To separate into a sequence of graded status levels.
- To become layered; form strata.
- To develop different levels of caste, class, privilege, or status.