Etymology
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recycling (n.)

1924, verbal noun from recycle (v.). Originally a technical term in oil-refining and similar industries; its broader consumer sense dates from 1960.

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Definitions of recycling

recycling (n.)
used or abandoned materials for use in creating new products;
Every Monday, we put our recycling out on the curb for pick-up
recycling (n.)
the act of processing used or abandoned materials for use in creating new products;
From wordnet.princeton.edu