Usage Note
Sottoprodotto is a compound of sotto (under/sub) + prodotto (product). It refers to a secondary output from an industrial or agricultural process, much like English 'by-product'. The plural is sottoprodotti. It is also used figuratively: un sottoprodotto della globalizzazione (a by-product of globalisation).
Examples
"La crusca è un sottoprodotto della molitura del grano."
Natural Translation
Bran is a by-product of wheat milling.

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