waste product

noun

1. material discarded as useless in the process of producing something.
2. feces, urine, and other material excreted in the life process.

waste product

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

Word History and Origins

Origin of waste product¹

First recorded in 1930–35

Example Sentences

Building bulk tissue using a bio-printer isn’t that tough, but creating the fine network of blood vessels that ferry nutrients and waste products in and out of cells is much harder.

From Singularity Hub 

Those credits would give qualifying companies $20 per ton of sequestered solid carbon — the exact waste product from C-Zero’s process.

From TechCrunch

I will eat calves’ liver, which I love, in the United States because it’s a waste product.

From Freakonomics

That means it requires oxygen and makes carbon dioxide as a waste product.

From Science News For Students

Your local independent roaster is probably buying big bags of raw coffee from Asia, South America, or Africa, and the burlap bags it comes in—produced by the millions each year—are mostly a waste product.

From Popular-Science

And if you did the same thing with waste product from homes, factories, and offices it could make a massive difference.

From The Daily Beast

You take the waste product in fields, turn it into charcoal and plow it back into the fields again.

From The Daily Beast

It is the principal waste-product of metabolism, and constitutes about one-half of all the solids excreted—about 30 gm.

From Project Gutenberg

But when proteins are burned, another waste product containing nitrogen is formed.

From Project Gutenberg

Drunkenness and an iron social system manufactured the criminal, the wastrel, the lunatic, and we dealt with the waste product.

From Project Gutenberg

In the early days of gas manufacture this black, viscid, unsavoury substance was in every sense a waste product.

From Project Gutenberg

The support that renders the industrial home possible is the waste product of the city.

From Project Gutenberg