Stratum

1.

(One of a series of layers especially of rock in the earth's crust, a social level or class, any of the socioeconomic group of a society) ជាន់ខាងលើ, វណ្ណៈ, ឋានៈ
Example: Social strata, privileged stratum, a low stratum of society.geological stratum ស្រទាប់ social stratum ជាន់, ថ្កាត់

2.

(បច្ចេកទេស) វណ្ណៈសង្គម, ស្រទាប់

• stratum mean
  - មធ្យមភាគនៃស្រទាប់

1.

A bed of earth or rock of one kind, formed by natural causes, and consisting usually of a series of layers, which form a rock as it lies between beds of other kinds. Also used figuratively.

2.

A bed or layer artificially made; a course.