Meaning of 各界層 in Japanese

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Definition of 各界層

かっかい(kakkai) · かくかい(kakukai) 【各界】

そう(sou) 【層】

(n, n-suf) layer; seam; bed; stream; class
洪水のあとに粘土の層が残った。
The flood deposited a layer of mud.
(math) sheaf
(ctr) storey (of a building); story; floor