by-product

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by-product

a product which results from a common production process but which is secondary to the main product being produced from that process. The refining of crude oil to produce petrol, for example, also produces by-products such as tar and creosote. See BY-PRODUCT PRICING, PROCESS PRODUCTION.

by-product

a product that is secondary to the main product emerging from a production process. For example, the refining of crude oil to produce petroleum generates a range of by-products like bitumen, naptha and creosote.
References in periodicals archive ?
Microwave-assisted organic synthesis has been known since 1986(Giguere,1986).This non-conventional synthetic method has shown broad applications as a very efficient way to accelerate the course of many organic reactions giving better yield, high selectivity, lower quantities of side products, consequently easier work-up and purification of the products ( Mingos and Whittaker,1997).Therefore the growing interest in academic research and industrial laboratories is not surprising and is reflected in an exponential increase in the production of scientific papers, books and reviews related to the use of this technology.
Enzymes are proteins that act as catalysts to enable metabolic functions, but under some circumstances these oxygen-dependent enzymes can also produce highly toxic side products called reactive oxygen species or ROS.
One of the nicest side products of the installation is it allows me to lay guns across the wheel wells now with some support underneath.
The JV will trade of semi-processed oil and side products. CVP, a branch of PDVSA, will hold 60% in PetroMacareo, while PVEP will havw 40%.
Manufacturers of heavy side products such as bricks and blocks - both strongly represented in the West Midlands - have experienced the sharpest slowdown, recording a score of just 25, almost half the score from the previous quarter and one third of the score from two quarters ago.
(OTCBB:ALIF), a provider of award winning mobile 3G technology and applications, has announced the launch of the Get ALIFE(r) portal on TeliaSonera, the Nordic and Baltic leader in telecommunications, and will feature the latest mobile games: America's Next Top Model 7(tm), V-boyfriend(tm), V-girl(r) and V-Penguins(r), as well as their accompanying side products like wallpapers and screensavers.
The company's product portfolio includes telecommunications terminals and related products including fixed wireless phones, VoIP telephone 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.
The field is dominated by schools of materialism that describe mental phenomena as types or side products of physical phenomena.
It also includes a discussion of recovery of pulping spent liquors and regeneration of chemicals used, the manufacture of side products, and on-site manufacture and handling of bleaching chemicals.