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waste product

American

noun

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

waste product Scientific

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

Etymology

Origin of waste product

First recorded in 1930–35

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

waste product

These include albumin, made by the liver, and creatinine, a waste product removed by the kidneys.

From Science Daily ● Sep. 14, 2026

And because their other waste product is water, the center’s net water loss will be comparatively minuscule.

From The Wall Street Journal ● Sep. 4, 2026

The main solid waste product is phosphogypsum, which the plant discharges into the Mediterranean.

From Barron's ● Oct. 10, 2025

The battery brining liquid is a hazardous waste product too and is trucked to another specialized facility, the agency said.

From Los Angeles Times ● Apr. 9, 2025

However they had gotten there, Spirit Lake was now their home, and their photosynthesis was creating oxygen as a waste product.

From "Mountain of Fire" by Rebecca E. F. Barone

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023