By-product

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by-product

[′bī‚präd·əkt]
(engineering)
A product from a manufacturing process that is not considered the principal material.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

By-product

Material, other than the principal product, generated as a consequence of an industrial process or as a break-down product in a living system.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Celfrost, which generates some USD20m (EUR14.8m) of sales annually, supplies cold side products such as professional refrigerators, coldrooms, ice machines and freezers.Country: IndiaSector: Machinery/EngineeringTarget: Celfrost Innovations Pvt LtdBuyer: The Middleby Corporation Type: Corporate acquisitionStatus: ClosedBuyer advisor: Middleby Commercial Food Innovations Pvt Ltd
"Those processes are complicated and produce harmful side products. Our method is a very inexpensive, green process."
However, this process gives side products called "free radicals" that are released from the cells' energy generators (the mitochondria) into the cell, where they are free to wreak havoc.
The company's product portfolio includes telecommunications terminals and related products including fixed wireless phones and advanced mobile phones with the latest features, and on the consumer electronic side products include MP3 players, cash registers and set-top-box products.