feedstock

feed +‎ stock

feedstock (countable and uncountable, plural feedstocks)

1. Any bulk raw material constituting the principal input for an industrial process.

   Bio-materials may be substituted for petrochemical feedstocks as petroleum prices rise.

   The filtered extract of the mash is the feedstock for the fermenter.

   • 2009, M.S.Vassiliou, Historical Dictionary of the Petroleum Industry‎, page 5:

     In 2006, about 6 percent of the world's crude oil production was used in non-energy applications, primarily as a petrochemical feedstock.

• stockfeed