an abstract place usually conceived as having depth | a piece of furniture that provides a place to sleep |
a subpopulation divided into a stratified sampling | a plot of ground in which plants are growing |
people having the same social, economic, or educational status | a foundation of earth or rock supporting a road or railroad track |
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock) | the flat surface of a printing press on which the type form is laid in the last stage of producing a newspaper or magazine or book etc. |
| single thickness of usually some homogeneous substance |
| a stratum of ore or coal thick enough to be mined with profit |
| a depression forming the ground under a body of water |
| (geology) a stratum of rock (especially sedimentary rock) |