coprocessor

/ (ˌkəʊˈprəʊsɛsə) /

noun

computing a microprocessor circuit that operates alongside and supplements the capabilities of the main processor, providing, for example, high-speed arithmetic

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Scientific definitions for coprocessor

coprocessor
[ kōprŏs′ĕs-ər ]

A microprocessor distinct from the central processing unit. A coprocessor performs specialized functions that the central processing unit cannot perform or cannot perform as well and as quickly.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.