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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.


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.


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:

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

"Our technology is cheaper and more sustainable because it requires little energy and is based on a widely available waste product," he says.

From Science Daily Jun. 11, 2026

Lucy Bell-Reeves, NPK Recovery's co-founder, said using a waste product to grow trees was "a circular solution that can revitalise our struggling native species."

From BBC Apr. 2, 2026

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

From Barron's Oct. 10, 2025

Unfortunately, as the doctor appears not to have known, lead is not excreted as a waste product.

From "A Short History of Nearly Everything" by Bill Bryson

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