1 : a bed or layer artificially made. 2a : a sheetlike mass of sedimentary rock or earth of one kind lying between beds of other kinds. b : a region of the sea or atmosphere that is analogous to a stratum of the earth. c : a layer of tissue deep stratum of the skin.
3. It was an enormous task that affected every stratum of society.
“People had always dreamed of a unified world. We thought it would be a richer one. It wasn't. It meant that the Eskimo got educated and learned cost accountancy, but it didn't mean that the German learned to hunt whales with a spear. It meant everyone learned how to press buttons, and no one remembered how to dive for pearls.”