waste product

American  

noun

1. material discarded as useless in the process of producing something.

2. feces, urine, and other material excreted in the life process.

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waste product Scientific  

1. An unusable or unwanted substance or material produced during or as a result of a process, such as metabolism or manufacturing.

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Etymology

Origin of waste product

First recorded in 1930–35

Example Sentences

Existing methods also typically create waste products that contain high concentrations of PFAS, which often end up in landfills or are incinerated, said Erik Olson, a senior strategic director at the Natural Resources Defense Council.

From Washington Post

A "significant fire" has broken out among waste products at an industrial site in Somerset.

From BBC

“It’s a waste product that didn’t really cost the railroads anything and allowed them to make good use of something they had to get rid of anyway,” Solomon said.

From Washington Post

Fossil methane is a waste product of coal mines and also is extracted from shale and other underground deposits as natural gas.

From Salon

Another key protein, progranulin, regulates cell growth and a part of the cell called the lysosome that breaks down cellular waste products.

From Salon