a card in a computer on which additional chips can be mounted to expand the computer's capabilities.
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- expansion attic,
- expansion bend,
- expansion board,
- expansion bolt,
- expansion chamber,
- expansion joint,
- expansion slot,
- expansion team,
- expansion wave
Also called expansion board.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
A printed circuit board that can be installed to enhance a computer's capabilities, as by increasing memory or improving graphics.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.