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noun, Computers.
a card in a computer on which additional chips can be mounted to expand the computer’s capabilities.


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  • Exonuclease

    /ˌɛksəʊˈnjuːklɪˌeɪz/ noun 1. an enzyme that is capable of detaching the terminal nucleotide from a nucleic acid chain Compare endonuclease exonuclease ex·o·nu·cle·ase (ěk’sō-nōō’klē-ās’, -āz’, -nyōō’-) n. Any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.

  • Exoneration

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